°ULAR BONDING Review:

.leededwork:

1) a) Halogens tend to fonn I bonds

c) Sulfur tends to form ^ bonds

/ ".e) Xenon tends to form ^ bonds

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b) Alkaline Earth metals tend to form vt- bonds.

d) Phosphorus tends to form ) bonds

f) Rubidium tends to form __!_ bonds

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-«-"-,".^^A^.

3) a) bi ionic bonding metals tend to i0^^- electrons while non-metals tend to c}<?u//\ electrons.

b) Oppositely charged ions tend to /^t~H><.c'T each other forming the ionic bond.

4) Draw the Lewis Dot Diagrams for the following atoms with their ions:

a)Mg ^

d)I ->

g)Ar ^

J)B ^

b)Sr ^

e)Al ->

h)S ^

k)Si^

-^' l^ 1 S -2

c)P ->

f)Cs ->

i)N ->

'5,«"<^ o 5 .+"»

vT[^ l)Ca ^

5) Use Lewis Diagrams, along with ions, to interpret the bond formed between Aluminium and lodine.

c

"Mg» ^ Mg2+

rt o

^-^ 1"

^Ar'e fv

-> Ar

8"I»

^

-g^

S'r. ^ ^)r

4'tl^ 4l'*3

V>t°pe-"" ^ 7~î

Cs. ^ Qt

'N'£»

^ _A^Cas ^ :^

^

6) State whether the following combinations form lonic or Covalent bonds.

b) silicon and chlorine:a) two oxygen atoms:

c) magnesium and oxygen:

e) hydrogen and chlorine:

c1c

d) lithium and phosphate: ..

O sodium and bromine: _^_

7) If element A is in group II and an element Z is in Group VA form a compound. Using the Cross-Over^.^^..^.^

^.,

A^8) Element X from Group IIA and an element Y from Group VIIA form a compound.

a) Using the Cross-Over rule, write the molecular formula for this compound.

x" T

b) Using Lewis Dot structures, illustrate how these elements transfer electrons from their lastshells to respect the Octet Rule.

9) Using a Lewis Dot diagrams draw the Covalent bond arrangements for the following:

Hydrochloric Acid (HCI) Nitrogen triiodide (NIa) Carbon tetriodide (Cl4)

"I "v~\ ">»J.,

"°^r.'< » (

;I;» 1 »Oj.9

\i:J. -;^-ï:( "

^

I,-^<

.<J.«i » 9" ' »;IS(:-J:J.r , O»

ar ^ !Ï:" J-«

93 f ef

H-c-Jî»o i

;1o»

r

L.

10) Calcium (Ca) atoms and fluorine (F) atoms combine to form a compound. What is its fonnula?

c.+^-c^

11) Element X combines with oxygen to form the ionic compound X203. To which family in the periodictable could element X belong? ^/|+3J /-^~2.

)^—OÎQCQ^ Cn>^p_

12) A compound is made of magnesium and sulphur. Give the correct molecular formula for thiscompound. A/1/ir^ <s~^

-'

^.Sz -^ Al^^'^' ^l13) A compound is made of Gallium(Ga) and the polyatomic ion Sulfite. Give the correct molecular

formula for this compound. ^t"3 SC>/<2~

6a^^14) Aluminum atoms and oxygen atoms combine to form a compound? What is the molecular formula for

this compound? A\ +3 ,-2.o

AfiO1

15) Hydroxide (OH-) combines with Barium (Ba) to form a compound? What is the molecular formula

for this compound? ^ + z&a\ Çri^)a(o^\

16) Beryllium reacts with Carbonate to form what compound? Give the correct molecular formula."^2- ^ r-) -Z.

l3e1 ca:

6e,(û5^z -^ co-,17) Ammonium reacts with Carbonate to fwm a compound made up of two polyatomic ions, what is the

correct molecular formula for this compound? ^ .^, r ^ -i

(/V^^<À,

18) The following compound is ionically bonded:

To what family do X and Y belong to ? ( hint:flrsl undo the crossover rule)

a) X: ^ -^ R(9T>A 6r&c^p

b) Y:" ' "^ ^(oqcAS

ge

19) What is the charge of the ion and the hypothetical radical which make up: Al2(, I ^Js)3

a) lon charge Al?:

b) Radical charge YÛ5?:Ai^^

'^^5:3

20) What is the charge of the ion and the hypothetical radical which make up:

:.: ^ cfLlxo^1C.2;^)z

Ca XO^

b) lon charge Ca':

c) Radical charge XÛ4':.-^

21) Use Lewis Diagrams, along with ions, to interpret the bond formed between Calcium and Phosphorus.

EXTRA: Try these harder Covalent bonding problems: _(molecules with this level ofdifficulty will not be on test{°J^))

Using a Lewis Dot diagrams draw the Covalent bond arrangements for the following:

Ethane (C2H6) Butane (C4Hio) Ethanol (CH3CH20H)

H-6-C-H\A ^ 14 l-^

( l ^ 1l4~c~C-C-C-H

^ \ [. \\A K H ^