chapter 20 review questions

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General Chemistry: Atoms First, 2e (McMurry and Fay)

Chapter 20 Transition Elements and Coordination Chemistry

20.1 Multiple Choice Questions

1) Which of the following elements is an inner transition metal?A) Eu

B) e

C) !u") #c

Answer$ A

"iff$ 1

Algo. %ption$ algorithmic

2) What is the characteristic outer electron configuration for transition elements?

A) &n ' 1)d 10'(ns2

B) &n)d 10'(ns2C) &n 1)d 10'(ns1

") &n ' 1)d 10'(&n 1) s2

Answer$ A

"iff$ 2

*opic$ #ection 20.1 Electron Configurations

+) What is the groun,'state electron configuration for the element co-alt & Z 2/)?

A) Ar s2 +d /

B) Ar +d 3

C) Ar s2 p

4 5 s

1

") Ar +d /

Answer$ A

"iff$ 1


) Which element is most li6el7 to ha8e an anomalous electron configuration?

A) 9

B) *cC) Ag

") C,

Answer$ C"iff$ 2


1

Copyright © 2014 Pearson Education, Inc.



5) What is the groun,'state electron configuration for the element chromium &: 2)?

A) ;e s2 +d

B) Ar s2 +d

C) Ar s1 +d 5

") Ar +d 4

Answer$ C"iff$ 2



4) What is the groun,'state electron configuration for Cr in Cr 2%/2'?

A) Ar s1 +d 5

B) Ar s2 +d 4

C) Ar +d

") Ar +d 0

Answer$ ""iff$ 2


/) What is the groun,'state electron configuration for Co2 & Z 2/)?

A) Ar s2 +d 3

B) Ar s2 +d 5

C) Ar +d /

") Ar s1 +d 4

Answer$ C

"iff$ 2*opic$ #ection 20.1 Electron Configurations


<) Which transition metal has the anomalous groun,'state electron configuration$ =r d 10?A) !h

B) >,

C) Ag") C,

Answer$ B

"iff$ 2


2




3) Which of the following species has the groun,'state electron configuration Ar+d ?

A) *i

B) 2

C) Cr 2

") e2

Answer$ C"iff$ 2



10) @ow man7 d electrons are there in Mn%'?

A) 0

B) 1

C) 2") +

Answer$ A"iff$ 2*opic$ #ection 20.1 Electron Configurations


11) What is the d or-ital'filling ,iagram for e+ & Z 24)?

A) &A)B) &B)

C) &C)

") &")Answer$ "

"iff$ 2


12) @ow man7 8alence electrons ,oes the element Co ha8e?

A) 2

B) /C) <

") 3

Answer$ ""iff$ 1


3




1+) What two transition elements ha8e the highest electrical con,ucti8it7 of an7 elements at

room temperature?A) copper an, iron

B) copper an, sil8er

C) iron an, chromium") sil8er an, gol,

Answer$ B

"iff$ 1*opic$ #ection 20.2 >roperties of *ransition Elements

1) Which first row transition element has the highest melting point?

A) #cB)

C) e

") :n

Answer$ B"iff$ 1

*opic$ #ection 20.2 >roperties of *ransition Elements

15) Which transition element has the highest melting point?

A) eB)

C) Mo

") WAnswer$ "

"iff$ 1


14) Which of the following elements has the highest ,ensit7?

A) Cr B) ;i

C) %s

") *a

Answer$ C"iff$ 1


1/) or transition elements which of the following occurs as the effecti8e nuclear charge

increases?

A) *he atomic ra,ius increases.B) *he ,ensit7 increases.

C) Both the atomic ra,ius an, the ,ensit7 increase.

") *he atomic ra,ius ,ecreases an, the ,ensit7 increases.

Answer$ ""iff$ 1


4




1<) *hough we woul, e(pect an increase in atomic ra,ii going ,own a group from the secon, to

the thir, transition series of elements the actual ra,ii are nearl7 i,entical. *he term commonl7use, to ,escri-e this phenomenon is the

A) atomic ,isparit7.

B) effecti8e nuclear charge.C) lanthani,e contraction.

") transition ,efault.

Answer$ C"iff$ 1


13) Which of the following transition elements &#c *i Mn an, Cu) ha8e positi8e o(i,ation potentials?

A) #c

B) Cu

C) #c *i an, ") #c *i an, Mn

Answer$ ""iff$ 2


20) Which transition element is ,ifficult to o(i,ie with h7,ronium ion?

A) Cr

B) CuC) Mn

") *i

Answer$ B"iff$ 2


21) What o(i,ation state&s) is&are) e(hi-ite, -7 all first row transition elements e(cept

scan,ium?

A) 2

B) +C) 2 an, +

") 2 + an,

Answer$ A"iff$ 2

*opic$ #ection 20.+ %(i,ation #tates of *ransition Elements

5




22) What is the highest possi-le o(i,ation state for chromium?

A) +

B) C) 5

") 4

Answer$ ""iff$ 1



2+) What statement is most inconsistent with the chemistr7 of transition elements?

A) Bromi,e chlori,e an, io,i,e sta-ilie the higher o(i,ation states of the transition elements.

B) Earl7 transition metal ions with the metal in its lowest o(i,ation state are goo, re,ucingagents.

C) ons that ha8e transition metal in their highest o(i,ation state ten, to -e goo, o(i,iing

agents.

") *he sta-ilit7 of the higher o(i,ation states increases ,own a perio,ic group.Answer$ A

"iff$ +*opic$ #ection 20.+ %(i,ation #tates of *ransition Elements

2) ana,ium in the 5 o(i,ation is most often foun, as compoun,s of A) -romi,es.

B) chlori,es.

C) fluori,es.

") io,i,es.Answer$ C

"iff$ 2


25) Which of the following is the strongest re,ucing agent?A) Cr

B) #c

C)

") *iAnswer$ B

"iff$ 2


24) Which of the following is the most ,ifficult to o(i,ie?

A) Cr B)

C) *i

") #c

Answer$ A"iff$ 2


6




2/) What is the strongest o(i,iing agent of the following set$ Cl2 CrCl+ =Mn% =!e%?

A) Cl2

B) CrCl+

C) =Mn%

") =!e%Answer$ C

"iff$ 2


2<) What is the strongest o(i,iing agent of the following set$ MnCl2 Mn&%@)+ Mn%2

=Mn%?

A) MnCl2

B) Mn&%@)+

C) Mn%2

") =Mn%

Answer$ ""iff$ 2


23) What chemical eDuation represents the -est metho, for o-taining pure chromium?

A) eCr 2%& s) C& s) heat e& s) 2 Cr& s) C%& g )

B) Cr 2%+& s) 2 Al& s) heat 2 Cr& s) Al2%+& s)

C) Cr 2%+& s) 2 e& s) heat e2%+& s) 2 Cr& s)

") Cr 2&aq) @2& g ) Cr& s) 2 @&aq)

Answer$ B"iff$ 2*opic$ #ection 20. Chemistr7 of #electe, *ransition Elements

+0) Which is not a characteristic reaction of chromium metal or chromium&) ion?

A) Cr& s) 2 @&aq) Cr 2&aq) @2& g )

B) Cr 2&aq) %2& g ) @&aq) Cr +&aq) 2 @2%&l )

C) Cr&%@)2& s) 2 @+%&aq) Cr 2&aq) @2%&l )

") Cr&%@)2& s) %@'&aq) Cr&%@)+'&aq)

Answer$ "

"iff$ +*opic$ #ection 20. Chemistr7 of #electe, *ransition Elements

7




+1) Which of the following chromium species is the strongest aci,?

A) Cr&%@)2

B) Cr&%@)+

C) Cr%2&%@)2

") Cr%2'

Answer$ C"iff$ +

*opic$ #ection 20. Chemistr7 of #electe, *ransition Elements

+2) Which chromium species e(ists onl7 un,er aci,ic con,itions?A) Cr&%@)2

B) Cr&%@)'

C) Cr%2'

") Cr 2%/2'

Answer$ "

"iff$ 2


++) Which is the strongest o(i,iing agent un,er aci,ic con,itions?

A) Cr 2

B) Cr +

C) Cr%2'

") Cr 2%/2'

Answer$ "

"iff$ 2*opic$ #ection 20. Chemistr7 of #electe, *ransition Elements

+) n the two half'reactions shown -elow which chromium species is the strongest o(i,iingagent?

Cr 2%/2F &aq) 1 @&aq) 4 e F 2 Cr +&aq) / @2%&l ) E G 1.++

Cr%2F &aq) @2%&l ) 4 e F Cr&%@)+& s) 5 %@ F &aq) E G F 0.1+

A) Cr 2%/2F

B) Cr +

C) Cr%2F

") Cr&%@)+Answer$ A

"iff$ +





+5) What statement is inconsistent with the chemistr7 of iron?

A) ron is the fourth most a-un,ant element in the earthHs crust.

B) ron is o-taine, from the re,uction of hematite &e2%+) an, magnetite &e+%) -7 car-on in

a -last furnace.

C) ron is a relati8el7 har, metal an, it is relati8el7 unreacti8e with haloaci,s.

") *he maIorit7 of iron in a health7 human is present in the o(7gen'carr7ing proteinhemoglo-in.Answer$ C

"iff$ 1


+4) What are two of the maIor components of stainless steel?

A) iron an, car-onB) iron an, chromium

C) iron an, titanium

") iron an, tungsten

Answer$ B"iff$ 1


+/) What statement is most inconsistent a-out the chemistr7 of iron?

A) ron&) h7,ro(i,e is 8er7 solu-le an, reacts rea,il7 with h7,ro(i,e to form e&%@) F .

B) ron reacts with h7,rochloric aci, in the a-sence of air to 7iel, iron&) ion an, h7,rogen gas.

C) ron reacts with nitric aci, to 7iel, iron&) ion an, nitric o(i,e.

") *he most common o(i,ation states of iron are 2 &ferrous) an, + &ferric).Answer$ A

"iff$ 2


+<) What is the strongest o(i,iing agent of the following set$ e% e2%+ e+% e%2'?

A) e%

B) e2%+

C) e+%

") e%2'

Answer$ ""iff$ 2


+3) What statement is inconsistent with the chemistr7 of copper?A) t has a high electrical con,ucti8it7 an, is wi,el7 use, to ma6e electrical wiring.

B) t is commonl7 foun, in the elemental state.

C) t is a re,,ish colore, metal that accounts for onl7 0.004<J of the earthHs crust -7 mass.") t is use, to ma6e corrosion'resistant water pipes -ecause it has a positi8e o(i,ation potential.

Answer$ "


!




0) What is the compoun, responsi-le for the green patina seen on -rone monuments?

A) CuC%+

B) Cu2&%@)2C%+

C) Cu&%@)2

") Cu2&%@)2#%

Answer$ ""iff$ 2


1) Which of the following is a ,isproportionation reaction?

A) Cu2#&l ) %2& g ) 2 Cu&l ) #%2& g )

B) + Cu& s) 2 ;%+'&aq) < @&aq) + Cu2&aq) 2 ;%& g ) @2%&l )

C) 2 Cu&aq) Cu& s) Cu2&aq)

") Cu2&aq) ;@+&aq) Cu&;@+)2&aq)

Answer$ C


2) Ksing the following re,uction potentials for copper ,etermine the unsta-le copper

compoun,.

Cu&aq) e' Cu& s) E G 0.52

Cu2&aq) e' Cu&aq) E G 0.15

A) CuCl

B) CuCl2

C) Cu#%

") Cu&%@)2Answer$ A

"iff$ +


+) "escri-e what happens when +.0 M ;@+ is slowl7 a,,e, to an aDueous solution of Cu#%.

A) A -lue precipitate of Cu&%@)2 forms.

B) A ro7al -lue comple( of Cu&;@+)2 is forme,.

C) A -lue precipitate of Cu&%@)2 is forme, which is then con8erte, to the ro7al -lue comple(

Cu&;@+)2.

") A ro7al -lue comple( of Cu&;@+)2 is forme, which then is con8erte, to a -lue precipitate of Cu&%@)2.

Answer$ C

"iff$ 2


10




) Which one of the following compoun,s is not consistent with the terminolog7 of a comple(?

A) Cu&;@+)2

B) Cu#% L 5@2%

C) = +e&C;)4

") Cr&;@+)4Cl+

Answer$ B"iff$ 1

*opic$ #ection 20.5 Coor,ination Compoun,s

5) Which is a comple( ion?

A) CrCl+

B) Cr%2F

C) Cr&@2%)4+

") Cr 2%/2F

Answer$ C

"iff$ 1


4) What is the coor,ination num-er of the e atom in = +e&C2%)+?

A) 2

B) +C)

") 4

Answer$ ""iff$ +


/) What is the coor,ination num-er of the Au atom in = Au&C;)2&#C;)2?

A) 2

B) +

C) ") 4

Answer$ C

"iff$ +


<) What is the o(i,ation state of the Cr atom in ;i&en)++Cr&C;)42?A) 2

B) +C)

") 4

Answer$ B"iff$ +

*opic$ #ection 20.4 igan,s

11




3) What is the o(i,ation state of the Co atom in Co&;@+)5Cl&;%+)2?

A) 2

B) +C)

") 4

Answer$ B"iff$ +*opic$ #ection 20.4 igan,s

50) A chromium&) ion forms a comple( ion with two ammonia molecules an, four thioc7anate

ions. What is the formula of the comple( ion?

A) Cr&;@+)2&;C#)+

B) Cr&;@)2&;C#)

C) Cr&;@+)2&;C#) F

") Cr&;@+)2&;C#)F

Answer$ C"iff$ +


51) Which of the following can function as a -i,entate ligan,?

A) C%

B) %@'

C) ;@+

") C2%2'

Answer$ "

"iff$ 1

*opic$ #ection 20.4 igan,sAlgo. %ption$ algorithmic

52) Which of the following can function as a -i,entate ligan,?

A) C; F

B) ;C# F

C) @2 ;C@2C%2 F

") All of these can function as -i,entate ligan,s.

Answer$ C

"iff$ 1


12




5+) Which coor,ination comple( ligan, is incorrectl7 name,?

A) sulfato

B) ; nitrato

C) o(alato

") #C thioc7anato

Answer$ A"iff$ 2

*opic$ #ection 20./ ;aming Coor,ination Compoun,s

5) Eth7lene,iaminetetraacetate ion &E"*A') is commonl7 referre, to as a NNNNNNNN ligan,.A) mono,entate

B) -i,entate

C) tetra,entate") he(a,entate

Answer$ "

"iff$ 1


55) Which of the following can function as a chelating agent?

A) C;'

B) C%

C) @2 ;C@2C@2 ;@2

") ;C#'

Answer$ C"iff$ 2



54) When the o(alate ion C2%2F is -on,e, to the iron&) ion in the comple( ion

e&C2%)++F a NNNNNNNN'mem-ere, chelate ring is forme,.

A) +B)

C) 5

") 4Answer$ C

"iff$ +


13




5/) Which ligan, when -on,e, to a metal woul, -e incorrectl7 name,?

A) @2% aDua

B) ;@+ ammonia

C) C% car-on7l

") ' fluoro

Answer$ B"iff$ 1


5<) Write the chemical formula for aDua-romo-is&eth7lene,iamine)chromium&) chlori,e.

A) CrBr&@2%)&en)Cl

B) CrBr 2&@2%)&en)Cl2

C) CrBr&@2%)&en)2Cl2

") CrBr&@2%)&en)2Cl+Answer$ C

"iff$ +*opic$ #ection 20./ ;aming Coor,ination Compoun,s

53) Write the chemical formula for pentaamminenitritoco-alt&) ion.

A) Co&;%)&;@+)5+

B) Co&;%2)&;@+)52

C) Co&%;%)&;@+)52

") Co&;@+)5&;2%)2

Answer$ C

"iff$ +


40) What is the correct formula for tetraamminecar-onatoiron&) chlori,e?

A) &;@+)eC%+Cl

B) e&C%+)&;@+)Cl

C) e&C%+)&;@+)Cl2") e&C%+)Cl&;@+)

Answer$ B

"iff$ +


14




41) *he comple( cis'CoCl&;@+)&;@2C@2C@2 ;@2)22 was resol8e, into optical isomers in

1311 -7 Alfre, Werner ,emonstrating the octahe,ral geometr7 of the ion. ;ame this comple(

ion.

A) cis'chloroammineeth7lene,iamineco-alt&) ionB) cis'amminechloroeth7lene,iamineco-alt&) ion

C) cis'amminechloro-is&eth7lene,iamine)co-alt&) ion") cis'amminechloro-is&eth7lene,iamine)co-alt&) ionAnswer$ "

"iff$


42) What is the name of the comple( ;i&en)++Cr&C;)42?

A) eth7lene,iaminenic6el&) he(ac7anochromate&)

B) tris&eth7lene,iamine)nic6el&) he(ac7anochromate&)

C) tris&eth7lene,iamine)nic6el&) he(ac7anochromate&)") -is&eth7lene,iamine)nic6el&) he(ac7anochromate&)

Answer$ C"iff$ *opic$ #ection 20./ ;aming Coor,ination Compoun,s

4+) What is the name of the comple( ;i&@2%)&;@2C@2C@2 ;@2)#% L 5@2%?

A) aDuaeth7lene,iaminenic6el&) sulfate h7,rateB) tetraaDuaeth7lene,iaminenic6el&) sulfate pentah7,rate

C) tetraaDua-is&eth7lene,iamine)nic6el&) sulfate pentah7,rate

") tetraaDua-is&eth7lene,iamine)nic6el&) sulfate pentah7,rateAnswer$ B

"iff$


4) What is the name of the comple( ion AuBrCl&C;)2'?

A) -romochloro,ic7anogol,&) ion

B) -romochloro,ic7anoaurate&) ion

C) -romochloro,ic7anoargentate&) ion") -romochloro,ic7anoaurate&) ion

Answer$ B

"iff$


45) n or,er to form a neutral compoun, he(afluoroaluminate woul, reDuire

A) three = ions.

B) three Cl F ions.

C) si( ;a ions.

") si( Br F ions.

Answer$ A

"iff$ 2*opic$ #ection 20./ ;aming Coor,ination Compoun,s

15




44) ,entif7 the classification of isomers illustrate, -7 Co&;%2)&;@+)52 an, Co&%;%)

&;@+)52.

A) lin6age isomers

B) ioniation isomers

C) geometric isomers") optical isomers

Answer$ A

"iff$ +*opic$ #ection 20.< somers

4/) Which pair of isomers illustrates the concept of ioniation isomers?

A) Cr&#C;)&;@+)52 an, Cr&;C#)&;@+)52

B) CoCl&;@+)5#% an, Co&#%)&;@+)5Cl

C) cis '>tCl2&;@+)2 an, trans '>tCl2&;@+)2

") &)'Co&en)++ an, &')'Co&en)++Answer$ B

"iff$ +

*opic$ #ection 20.< somers

4<) @ow man7 ,ifferent ,iastereoisomers are possi-le for tetrahe,ral comple( ion CuB C ?

A) 0

B) 1C) 2

")

Answer$ A

"iff$ +*opic$ #ection 20.< somers

43) *he compoun,s Cr&@2%)4Cl+ an, CrCl+&@2%)+ L +@2% are e(amples of

A) ,iastereoisomers.B) enantiomers.

C) ioniation isomers.

") lin6age isomers.Answer$ C

"iff$ +


16




/0) Which ion has cis an, trans isomers?

A) >,Cl+ ;@+'

B) >t&C;)5 ;@+'

C) >tCl2&C;)22'

") >t&C2%)22'Answer$ C

"iff$ +


/1) Which comple( is opticall7 acti8e?

A) CoClen2'

B) trans'CrCl2&en)2

C) cis'CrCl2&en)2

") >tCl2&;@+)2

Answer$ C"iff$ 5

*opic$ #ection 20.3 Enantiomers an, Molecular @an,e,ness

/2) Which comple( cannot e(ist as enantiomers?

A) CoCl2&@2%)

B) Co&en)++

C) cis'CrCl2&C2%)2

") e&C2%)2&en)'

Answer$ A

"iff$ 5*opic$ #ection 20.3 Enantiomers an, Molecular @an,e,ness

/+) Which ,efinition -est ,escri-es isomers that are non'superimposa-le mirror images of each

other that rotate plane polarie, light to the same ,egree -ut in opposite ,irections?A) ,iastereoisomers

B) enantiomers

C) lin6age isomers") racemic mi(ture

Answer$ B

"iff$ 2


17




/) Which one of the following o-Iects is chiral?

A) a -ottle

B) a chair C) a glass

") a glo8e

Answer$ ""iff$ 2


/5) A comple( ion that has a -roa, a-sorption -an, at 425 nm in its 8isi-le a-sorption spectrum

will appear to -e

A) -lue.B) colorless.

C) re,.

") 7ellow.Answer$ A

"iff$ 1

*opic$ #ection 20.10 Color of *ransition Metal Comple(es

/4) What h7-ri,iation scheme is use, for ;i in the sDuare planar comple( of ;i&C;)2'?

A) sp+

B) dsp2

C) dsp+

") d 2 sp+

Answer$ B

"iff$ 1*opic$ #ection 20.11 Bon,ing in Comple(es$ alence Bon, *heor7

//) What t7pe of h7-ri, or-itals are use, -7 the *i atom to form chemical -on,s in the comple(

ion *i&@2%)4+?

A) sp+

B) dsp2

C) dsp+

") d 2 sp+

Answer$ "

"iff$ 1

*opic$ #ection 20.11 Bon,ing in Comple(es$ alence Bon, *heor7

1




/<) @ow man7 unpaire, electrons are present in the high spin form of the Co 4+' comple( an,

what metal or-itals are use, in -on,ing?

A) 0 unpaire, electrons an, s p an, d or-itals to gi8e sp+d 2

B) unpaire, electrons an, s p an, d or-itals to gi8e sp+d 2

C) 0 unpaire, electrons an, +d s an, p or-itals to gi8e d 2 sp+

") unpaire, electrons an, +d s an, p or-itals to gi8e d 2 sp+

Answer$ B"iff$ 2


/3) Which metal ion is most li6el7 to form a sDuare planar comple( ion with C;'?

A) Co2

B) Cu2

C) ;i2

") :n2

Answer$ C

"iff$ 2*opic$ #ection 20.11 Bon,ing in Comple(es$ alence Bon, *heor7

<0) *he comple( ;i&C;)2' is ,iamagnetic an, the comple( ;iCl2' is paramagnetic. What

can 7ou conclu,e a-out their molecular geometries?A) Both comple(es ha8e sDuare planar geometries.

B) Both comple(es ha8e tetrahe,ral geometries.

C) ;iCl2' has a sDuare planar geometr7 while ;i&C;)2' has a tetrahe,ral geometr7.

") ;iCl2' has a tetrahe,ral geometr7 while ;i&C;)2' has a sDuare planar geometr7.

Answer$ ""iff$ *opic$ #ection 20.11 Bon,ing in Comple(es$ alence Bon, *heor7

<1) @ow man7 d electrons are there on the e metal atom in ;a+e&C;)4?

A) 1B) +

C) 5

") 4Answer$ C

"iff$ +


1!




<2) Which of the following species is ,iamagnetic?

A) an isolate, gas'phase + ion

B) a high'spin octahe,ral e2 comple(

C) an isolate, gas'phase Cu2 ion

") a low'spin octahe,ral Co+ comple(

Answer$ ""iff$ +



<+) What is a representati8e or-ital'filling ,iagram for the co-alt ion in the low spin comple( of

Co&C;)4+'?

A) &A)B) &B)

C) &C)

") &")Answer$ B

"iff$ 2


<) Which of the following comple( ions is colorless?

A) Co&@2%)42

B) Mn&C;)4+'

C) CrCl+&@2%)+

") Ag&;@+)2

Answer$ "

"iff$ +

*opic$ #ection 20.12 Cr7stal iel, *heor7

20




<5) Which of the following comple(es has fi8e unpaire, electrons?

A) Mn&@2%)42

B) Mn&C;)4+'

C) CrCl+&@2%)+

") Ag&;@+)2

Answer$ A

"iff$ +


<4) Which of the following comple(es are ,iamagnetic?

Mn&C;)4+' :n&;@+)2 e&C;)4' e4+'

A) :n&;@+)2

B) :n&;@+)2 an, e4+'

C) :n&;@+)2 an, e&C;)4'

") Mn&C;)4+' :n&;@+)2 an, e&C;)4'Answer$ C

"iff$ *opic$ #ection 20.12 Cr7stal iel, *heor7

</) or an octahe,ral comple( what metal , or-itals are ,irectl7 towar,s the ligan,s?A) d (7 d (B) d (7 d ( d 7C) d z O , d xO- yO

") d z O d ( d 7

Answer$ C"iff$ +*opic$ #ection 20.12 Cr7stal iel, *heor7

<<) What is the e(pecte, or,er for increasing octahe,ral &P0) cr7stal fiel, splitting for the

ligan,s ' ' @2% ;@+ en C%?

A) ' ' @2% ;@+ en C%

B) ' ' ;@+ en C% @2%

C) ' ' @2% C% ;@+ en

") C% en ;@+ @2% ' '

Answer$ A

"iff$ 2


21




<3) What is the e(pecte, or,er for increasing octahe,ral &P0) cr7stal fiel, splitting for ligan,s?

A) hali,es % ligan,s ; ligan,s C;'

B) hali,es C;' % ligan,s ; ligan,s

C) C;' ; ligan,s % ligan,s hali,es

") % ligan,s ; ligan,s C;' hali,es

Answer$ A"iff$ 2


30) What is the cr7stal fiel, energ7 le8el ,iagram for the comple( e&@2%)4+?

A) &A)B) &B)

C) &C)

") &")Answer$ B

"iff$ 2


31) What is the cr7stal fiel, energ7 le8el ,iagram for the comple( Co&C;)4+'?

A) &A)

B) &B)C) &C)

") &")

Answer$ A"iff$


22




32) Which ion woul, 7ou e(pect to ha8e the largest cr7stal fiel, splitting "?

A) e&C;)4'

B) e&C;)4+'

C) e&@2%)42

") e&@2%)4+Answer$ B"iff$ 2



3+) What statement is inconsistent with the cr7stal fiel, theor7 of tetrahe,ral comple(es?A) Pt is a-out R3Hs that of P0.

B) *etrahe,ral comple(es are nearl7 all low spin.

C) *he d (7 d ( an, d 7 or-itals are higher in energ7 than the d z O an, d xO- yO or-itals.

") ;one of the metal , or-itals point ,irectl7 at the ligan,s in a tetrahe,ral en8ironment.

Answer$ B"iff$ +


3) Which one of the following comple(es is consi,ere, to -e tetrahe,ral?

A) eCl'

B) ;i&C;)2'

C) >tCl2'

") >,Cl2&;@+)2

Answer$ A

"iff$ 2*opic$ #ection 20.12 Cr7stal iel, *heor7

35) Assume the a-sorption of the following comple( ions can -e measure, as one -roa, -an,.

Which of the following is e(pecte, to ha8e an a-sorption -an, with the shortest wa8elength?

A) e&;

B) e&C;

C) eC

") eB

Answer$ B

"iff$


23




34) @ow man7 unpaire, electrons will Co ha8e in the comple( CoCl2'?

A) 1

B) +

C) ") 5

Answer$ B"iff$ *opic$ #ection 20.12 Cr7stal iel, *heor7

3/) Which group of elements in,icate, -7 letter an, sha,ing on the perio,ic ta-le a-o8e

represents the transition elements?

A) A

B) BC) C

") "

Answer$ B"iff$ 1

*opic$ Conceptual >ro-lems

3<) Which group of elements in,icate, -7 letter an, sha,ing on the perio,ic ta-le a-o8e

represents the inner transition elements?

A) AB) B

C) C

") "

Answer$ ""iff$ 1


24




33) Which element in,icate, on the a-o8e perio,ic ta-le has the electron configuration =r d 5

5 s2?

A) element A

B) element BC) element C

") element "

Answer$ C

"iff$ 1*opic$ Conceptual >ro-lems

100) Which element in,icate, on the a-o8e perio,ic ta-le has the electron configuration Se f /

5d 1 4 s2?

A) element A

B) element BC) element C

") element "

Answer$ "

"iff$ 2


101) Which element in,icate, on the a-o8e perio,ic ta-le has the electron configuration Ar

+d + s2?A) element A

B) element B

C) element C") element "

Answer$ A


25




102) Which element in,icate, on the a-o8e perio,ic ta-le has the electron configuration Ar

+d 10 s1?

A) element AB) element B

C) element C

") element "Answer$ B"iff$ 2


10+) Which is the most common ion forme, -7 element B on the a-o8e perio,ic ta-le?

A) B5

B) B2

C) B+

") B

Answer$ B"iff$ 2


*he first transition series metals are shown -elow.

10) Which has the highest melting point?

A) #c

B) C) Mn

") :n

Answer$ B"iff$ 1


105) Which has the lowest melting point?

A) #c

B)

C) Mn

") :nAnswer$ "


26




104) Which has the largest atomic ra,ius?

A) #c

B) C) ;i

") :n

Answer$ A"iff$ 1


10/) Which has the smallest atomic ra,ius?

A) #c

B)

C) ;i") :n

Answer$ C

"iff$ 1


10<) Which has the greatest ,ensit7?A) #c

B)

C) Cu") :n

Answer$ C

"iff$ 1


103) Which has the most positi8e stan,ar, o(i,ation potential?A) #c

B)

C) Cu") :n

Answer$ A

"iff$ 1


110) Which has the most negati8e stan,ar, o(i,ation potential?

A) #cB)

C) Cu

") :nAnswer$ C

"iff$ 1


27




111) Base, on the 8ariation in :eff which M2 ion shoul, -e the strongest re,ucing agent?

A) *i

B) Cr

C) e") :n

Answer$ A"iff$ +*opic$ Conceptual >ro-lems

112) Base, on the 8ariation in :eff which M2 ion shoul, -e the wea6est re,ucing agent?

A) *i

B) Cr C) e

") :n

Answer$ ""iff$ +


11+) Base, on the 8ariation in :eff which o(oanion shoul, -e the strongest o(i,iing agent?

A) %+'

B) Cr%2'

C) Mn%2'

") e%2'

Answer$ "

"iff$ +


11) Base, on the 8ariation in :eff which o(oanion shoul, -e the wea6est o(i,iing agent?

A) %+'

B) Cr%2'

C) Mn%2'

") e%2'

Answer$ A

"iff$ +*opic$ Conceptual >ro-lems

115) Which metal e(hi-its the highest o(i,ation state in its compoun,s?A) #c

B) Cr

C) Mn") :n

Answer$ C

"iff$ 2


2




*he secon, transition series metals are shown -elow.


A) 9B) Mo

C) *c

") C,Answer$ B

"iff$ 1


11/) Which has the lowest melting point?

A) 9B) MoC) *c

") C,

Answer$ ""iff$ 1


11<) Which has the largest atomic ra,ius?

A) 9

B) Mo

C) !h") C,

Answer$ A


113) Which has the smallest atomic ra,ius?

A) 9

B) Mo

C) !h") C,

Answer$ C"iff$ 1*opic$ Conceptual >ro-lems

2!




120) Which has the greatest ,ensit7?

A) 9

B) MoC) !h

") C,

Answer$ C"iff$ 1


121) Which has the lowest ,ensit7?

A) 9

B) Mo

C) !h") C,

Answer$ A

"iff$ 1


*he thir, transition series metals are shown -elow.


A) uB) W

C) %s

") @gAnswer$ B"iff$ 1


12+) Which has the lowest melting point?

A) u

B) WC) %s

") @g

Answer$ "


30




12) Which has the largest atomic ra,ius?

A) u

B) WC) %s

") @g

Answer$ A"iff$ 1


125) Which has the smallest atomic ra,ius?

A) u

B) W

C) %s") @g

Answer$ C

"iff$ 1


124) Which has the greatest ,ensit7?A) u

B) W

C) %s") @g

Answer$ C

"iff$ 1


12/) Which has the lowest ,ensit7?

A) uB) W

C) %s

") @gAnswer$ A

"iff$ 1


31




12<) Which of the a-o8e are -i,entate ligan,s?

A) All are -i,entate.

B) &a) an, &-)C) &c) an, &,)

") ;one are -i,entate.

Answer$ C"iff$ 1


123) Which of the a-o8e are mono,entate ligan,s?A) All are mono,entate.

B) &a) an, &-)

C) &c) an, &,)") ;one are mono,entate.

Answer$ B


1+0) Which of the a-o8e are ligan,s that contain two or more ,onor atoms?

A) All contain two or more ,onor atoms.B) &a) an, &-)

C) &c) an, &,)

") ;one contain two or more ,onor atoms.Answer$ A

"iff$ 1


32




1+1) Which of the a-o8e are -i,entate or tri,entate ligan,s capa-le of forming chelate rings?

A) &a) an, &c)

B) &-) an, &,)C) &a) &-) an, &c)

") &a) &-) &c) an, &,)

Answer$ A


1+2) Which of the a-o8e are mono,entate ligan,s?A) &a) an, &c)

B) &-) an, &,)

C) All are mono,entate.") ;one are mono,entate.

Answer$ B


33




Consi,er the following isomers of Co&;@+)Br 2. *he -lac6 sphere represents Co gra7

spheres represent ;@+ an, unsha,e, spheres represent Br.

1++) Which are cis'isomers?

A) isomers &1) an, &2)

B) isomers &1) an, &+)C) isomers &2) an, &)

") isomers &+) an, &)

Answer$ B


1+) Which are trans'isomers?A) isomers &1) an, &2)

B) isomers &1) an, &+)

C) isomers &2) an, &)") isomers &+) an, &)

Answer$ C


1+5) Which structures are i,entical?

A) ;one of the structures are i,entical.B) structure &1) structure &2) an, structure &+) structure &)

C) structure &1) structure &+) an, structure &2) structure &)

") structure &1) structure &) an, structure &2) structure &+)Answer$ C

"iff$ 2


1+4) Which e(ist as enantiomers?

A) All e(ist as enantiomers.B) isomers &1) an, &+)

C) isomers &2) an, &)

") ;one e(ist as enantiomers.

Answer$ ""iff$ 2


Consi,er the following eth7lene,iamine comple(es. *he -lac6 sphere represents Co gra7

34




connecte, spheres represent eth7lene,iamine ;@2C@2C@2 ;@2 an, unsha,e, spheres

represent Br.

1+/) Which comple(es are chiral?

A) comple(es &1) &2) an, &+)B) comple(es &1) &2) an, &)

C) comple(es &1) &+) an, &)

") comple(es &2) &+) an, &)Answer$ A


1+<) Which comple(es are enantiomers of one another?

A) comple(es &1) an, &+)

B) comple(es &1) an, &)C) comple(es &+) an, &)

") comple(es &1) &+) an, &)

Answer$ A"iff$ +


35




1+3) Which of the Co&) comple(es a-o8e are enantiomers of each other?A) &A) an, &B)

B) &C) an, &")

C) &A) &B) an, &C)") &A) &B) &C) an, &")

Answer$ A

"iff$ +


10) Which of the Co&) comple(es a-o8e are opticall7 acti8e?A) &A) an, &B)

B) &C) an, &")

C) &A) &B) an, &C)") &A) &B) &C) an, &")

Answer$ C

"iff$ +


36




11) Which >t&) comple(es are geometric isomers of each other?

A) &a) an, &f)

B) &-) an, &e)C) &c) an, &,)

") &a) an, &-)

Answer$ C


12) Ksing the a-o8e schematic of an artistHs color wheel ,etermine the color seen if a su-stancea-sor-s re, an, 7ellow light.

A) -lue

B) greenC) orange

") 8iolet

Answer$ A


37




1+) Ksing the a-o8e schematic of an artistHs color wheel ,etermine the color seen if a su-stance

a-sor-s 7ellow an, -lue light.

A) greenB) orange

C) re,

") 8ioletAnswer$ C

"iff$ 2


1) Ksing the a-o8e schematic of an artistHs color wheel ,etermine the color a-sor-e, if a

su-stance is seen as -eing green in color.

A) -lueB) orange

C) re,

") 8iolet

Answer$ C"iff$ 1


15) *he a-sor-ance spectrum of a comple( along with an artistHs color wheel is shown -elow.

"etermine the color one might see for this comple(.

A) green

B) re,C) re,'8iolet

") 7ellow

Answer$ C


3




14) Which is the cr7stal fiel, energ7 le8el ,iagram for an octahe,ral M4 comple(?

A) &A)

B) &B)C) &C)

") &")

Answer$ A


1/) Which is the cr7stal fiel, energ7 le8el ,iagram for a sDuare planar M comple( thatcontains no ligan,s on the z 'a(is?A) &A)

B) &B)

C) &C)") &")

Answer$ C


1<) Which is the cr7stal fiel, energ7 le8el ,iagram for a tetrahe,ral M?

A) &A)B) &B)

C) &C)

") &")

Answer$ ""iff$ +


3!




20.2 Algorithmic Questions

1) What is the groun,'state electron configuration for the element chromium &: 2)?

A) ;e s2 +d

B) Ar s2 +d

C) Ar s1 +d 5") Ar +d 4

Answer$ C



2) Which of the following elements is an inner transition metal?

A) Eu

B) eC) !u

") #cAnswer$ A



+) What is the groun,'state electron configuration for Cr + & Z 2)?

A) Ar s2 +d /

B) Ar s2 +d 1

C) Ar +d +

") Ar s1 +d 2Answer$ C



) @ow man7 d electrons are there in W %2'?

A) 0

B) 1

C) 2

") +

Answer$ A"iff$ 2

*opic$ #ection 20.1 Electron ConfigurationsAlgo. %ption$ algorithmic

40




5) Which of the following species has the electron configuration Ar+d 4?

A) Cr

B) e+

C) Co+

") ;i+

Answer$ C"iff$ 2



4) What is the highest possi-le o(i,ation state for manganese?

A) 2B) 5

C) 4

") /Answer$ "

"iff$ 1*opic$ #ection 20.+ %(i,ation #tates of *ransition Elements


/) Which of the following can function as a -i,entate ligan,?

A) C%

B) %@ '

C) ; @+

") C2% 2'

Answer$ "

"iff$ 1*opic$ #ection 20.4 igan,sAlgo. %ption$ algorithmic

<) Which of the following can function as a chelating agent?

A) #@'

B) @2%

C) @2 ;C@2C%2'

") #C; ' Answer$ C

"iff$ 2

*opic$ #ection 20.4 igan,sAlgo. %ption$ algorithmic

41




3) Which of the following species is ,iamagnetic?

A) an isolate, gas'phase Cr + ion

B) a high'spin octahe,ral Cr 2 comple(

C) an isolate, gas'phase Cu2 ion

") a low'spin octahe,ral Co+ comple(

Answer$ ""iff$ +



10) Which ion woul, 7ou e(pect to ha8e the largest cr7stal fiel, splitting "?

A) !h&C;)4'

B) !h&C;)4+'

C) !h&@2%)42

") !h&@2%)4+

Answer$ B

"iff$ 5

*opic$ #ection 20.12 Cr7stal iel, *heor7Algo. %ption$ algorithmic

20.+ #hort Answer Questions

1) *ransition elements are locate, in the NNNNNNNN'-loc6 of the perio,ic ta-le.

Answer$ d "iff$ 1


2) Ksing shorthan, notation the electron configuration of Co+ is NNNNNNNN.

Answer$ Ar +d 4

"iff$ 2


+) *he small sies of thir, transition series atoms is referre, to as the NNNNNNNN contraction.

Answer$ lanthani,e

"iff$ 2*opic$ #ection 20.2 >roperties of *ransition Elements

) *he o(i,ation state of chromium in Cr 2%/2F is NNNNNNNN.

Answer$ 4

"iff$ 1*opic$ #ection 20.+ %(i,ation #tates of *ransition Elements

42




5) *he coor,ination num-er of platinum in >t&;@+)2Cl2 is NNNNNNNN.

Answer$

"iff$ 2*opic$ #ection 20.5 Coor,ination Compoun,s

4) >ol7,entate ligan,s are 6nown as NNNNNNNN agents.Answer$ chelating"iff$ 2


/) *he formula for tetraammine,ichlorochromium&) chlori,e is NNNNNNNN.

Answer$ Cr&;@+)Cl2Cl

"iff$ +


<) *he num-er of ,iastereoisomers possi-le for Co&en)2Cl2 is NNNNNNNN.

Answer$ 2"iff$ *opic$ #ection 20.< somers

3) >latinum uses NNNNNNNN h7-ri, or-itals to accept electron pairs from ligan,s in cis'>t&;@+)2Cl2.

Answer$ dsp2

"iff$ +


10) *he num-er of unpaire, electrons in Co&;@+)4+ is NNNNNNNN.

Answer$ 0

"iff$


chapter 20 review questions

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