entry task: nov 4-5 block 1question: provide the lewis dot, charge of its ion and name of ion for...
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Entry Task: Nov 4-5 Block 1
Question:Provide the Lewis dot, charge of its ion
and name of ion for Oxygen.
You have 5 minutes!
Agenda
Discuss Ionic Formation ws
Notes on Ionic bonding and formula mass
HW: Binary compounds ws
I can…
Create and name binary ionic compounds and provide the mass of its formula.
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Clear off Desk!Worksheet and Notes
outPeriodic Table
CalculatorWriting utensil
MAYHAN
How are cations made?
How are anions made?
Why do they do this?
Cations are metals that have lost electron(s) to obtain a full octet and has become a positive charge.
Anions are nonmetals that have gain an electron(s) to obtain a full octet and has become a negative charge.
To be stable like the noble gases with a full octet.
Why do transitional elements use Roman numerals?
What do Roman numeral mean?
Their valence electrons can how many electrons they will lose.
The number of valence electrons they have lost.
MAYHAN
Element
Protons
Electrons
Short handE. Config #
V E
Lewis Dot
# Gain/Lost electrons for Octet
Resulting # of V E
Cation/Anion
#Charge
Name of Ion
Rb
As
Ca
I
37 37 [Kr]2s1 1 Rb Lost 1 ve- 2 Cation
+1Rubidium
ion
33 33 [Ar]4s23104p3 5 As Gain 3 ve- 8 Anion
-3Arsenide
20 20 [Ar]4s2 2 Ca Lost 2 ve- 8 Cation
+2Calcium
ion
53 53 [Kr]5s24d105p5 7 I Gain1 ve- 8 Anion
-1Iodide
Element
Protons
Electrons
Short handE. Config #
V E
Lewis Dot
# Gain/Lost electrons for Octet
Resulting # of V E
Cation/Anion
#Charge
Name of Ion
Ga
Te
Cs
31 31 [Ar]4s23d104p1 3 Ga Lost 3 ve- 8 Cation
+3Galliumion
52 52[Kr] 5s24d105p4
6 Te Gain 2 ve- 8 Anion
-2Telluride
55 55 [Xe]6s1 1 Cs Lost1 ve- 8 Cation
+1Cesium
ion
Clear off Desk!!I will provide the P.T for
Quiz
MAYHAN
When cations form positive ions, where does the electron(s) go?
Sodium Atom (11e-)_____________________
Lewis Dot for the sodium ATOM
Na
1s2 2s22p6 3s1
When cations form positive ions, where does the electron(s) go?
Sodium Ion (10e-)______________
Lewis Dot for the sodium ION
1s2 2s22p6 3s1
Na [Na]+
When anions form negative ions, where did the electron(s) come from?
Chlorine Atom (17-)_____________
Lewis Dot for the Chlorine ATOM
Cl
1s2 2s22p6 3s23p5
When anions form negative ions, where did the electron(s) come from?
Chlorine Ion (18e-)________________
Lewis Dot for the Chlorine ION
Cl
1s2 2s22p6 3s23p6
Cl[ ]-
When cations form positive ions, where does the electron(s) go? When anions form negative ions, where did the electron(s) come from?
HERE IS YOUR ANSWER
Na [Na]+ Cl Cl[ ]-
[Na]+ Cl[ ]-
For each of the set, provide the atoms Lewis Dot, then its combined ion Lewis dot
Embedded Practice
Li/Br [Li]+Br [ ]-Br
Mg/O [Mg]+2O [ ]-2O
Al/N
Mg
Li
[Al]+3N [ ]-3NAl
Ionic BondingIn an ionic bond one element will transfer valence electron(s) to another.
Happened when: Transfer of ve- Between metal/nonmetal Creates +/- Both obtain octet Become neutral as a compound
Ionic Formulas Rules-
Metals in front and nonmetals in back
Use a subscript to note the number of atoms
Balance the charges so the compound is neutral
In the written formula, put “ide” on the anion ending.
Provide the formula and names
Embedded Practice
Formula Name
Li/Br_________________________________________ Mg/O________________________________________ Al/N_________________________________________
Na+1 F-1 Sodium fluoride
Sr+2S-2 Strontium sulfide
NaF
SrS
Ga+3P-3 Gallium phosphideGaP
Binary Compounds
Examples:
NaCl Li3N Al2S3 MgBr2
Not Binary
LiCN
NH4Cl
Binary compounds are compounds that are formed between only 2 different elements.
Lets practice some more…
O/LiOxygen =
O-2
Lithium = Li+1
Li +1 O-2
Li +1+ 2
Li2OLithium oxide
Or the switch method!!
O/LiOxygen =
O-2
Lithium = Li+1
Li +1 O-2
Li2 OLithium oxide
Lets practice some more…
Na/NNitrogen =
N-3
Sodium= Na+1
Na+1 N-3
Na+1+ 3
Na3NSodium nitride
Na+1
Or the switch method!!
Na/NNitrogen =
N-3
Sodium= Na+1
Na +1
N-3
Na3N
Sodium nitride
Lets practice some more…
Br/BeBromine=
Br-1
Beryllium= Be+2
Be+2 Br-
1Br-1- 2
BeBr2
Beryllium bromide
Or the switch method!!
Br/BeBromine=
Br-1
Beryllium= Be+2
Be +2
Br-
1Be Br2
Beryllium bromide
Lets practice some more…
Al/SSulfur= S-2Aluminum=
Al+3
Al+3 S-2
S-2 - 6
Al2S3
Aluminum sulfide
S-2Al+3
+ 6
Or the switch method!!
Al/SSulfur= S-2Aluminum=
Al+3
Al +3 S-2
Al2S3
Aluminum sulfide
Lets practice some more…
Sr/PPhosphorus=
P-3
Strontium= Sr+2
Sr+2 P-3
P-3 - 6
Sr3P2
Strontium phosphide
Sr+2Sr+2
+ 6
Or the switch method!!
Sr/PPhosphorus=
P-3
Strontium= Sr+2
Sr +2 P-3
Sr3P2
Strontium phosphide
Your turn Embedded PracticeFormula Name
O/Fe(III)_____________________________________ Ag(I)/N_______________________________________ Pb(IV)/P______________________________________ Cu(II)/I______________________________________ Se/Bi(III)______________________________________
Fe+3 O-2 Iron III oxide
Ag+1N-3 Silver I nitride
Fe2O3
Ag3N
Pb+4P-3 Lead IV phosphidePb3P4
Cu+2 I-1 Copper II iodideCuI2
Bi+3Se-2 Bismuth III selenideBi2Se3
Reverse the switch!!
Co3N2
Formulas back to names
-3+2
Cobalt II nitride
Reverse the switch!!
AlF3
Formulas back to names
-1+3
Aluminum Fluoride
Reverse the switch!!
V2O5
PbS2 Ag2Se
Formulas back to names
-2+5
Vanadium V oxide
Reverse the switch!!
PbS2
Formulas back to names
-1+2
Lead IV sulfide
That means 2
sulfur time -2
Means -4
-4
WAIT!!Sulfur is -
2!!!ALWAYS!!!
+4
Reverse the switch!!
Ag2Se
Formulas back to names
-2+1
Silver I Selenide
