Version 001 – HW11-Nomenclature – sparks – (52100) 1
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ChemPrin3e T02 60
001 10.0 points
If the following crystallize in the same type of
structure, which has the lowest lattice energy?
1. CaO
2. BaS correct
3. BaO
4. SrS
5. SrO
Explanation:
Lowest charge densities due to larger size.
ChemPrin3e T02 10
002 10.0 points
An element E has the electronic configuration
[Ne] 3s23p1. Write the formula of its com-
pound with sulfate.
1. E2(SO4)
2. E(SO4)3
3. E3(SO4)
4. E(SO4)2
5. E3(SO4)2
6. E2(SO4)3correct
Explanation:
E is aluminum; since it has three valence
electrons it forms a +3 ion isoelectronic with
Ne.
ChemPrin3e T02 76
003 10.0 points
An element E has the electronic configura-
tion 1s22s22p4. What is the formula of its
compound with lithium?
1. LiE
2. Li4E
3. Li2Ecorrect
4. LiE2
Explanation:
E is oxygen; since it has six valence elec-
trons, it forms a 2−ion isoelectronic with
Ne.
Mlib 07 0233
004 10.0 points
Which of the following is the best represen-
tation of the compound calcium sulfide?
1. Ca2+ ,2S
b
b
b
b
b
b
b
b
−
2. None is appropriate because calcium sul-
fide is a covalent compound.
3. 2 Ca+,S
b
b
b
b
b
b
b
b
2−
4. Ca+,S
b
b
b
b
b
b
b
b
−
5. 3 Ca2+ ,2S
b
b
b
b
b
b
b
b
3−
6. Ca2+ ,S
b
b
b
b
b
b
b
b
2−
correct
Explanation:
The metal loses all of its outer (valence)
electrons; the non-metal gains sufficient elec-
trons to form an octet. The ratio of the
negative and positive ions is chosen so there
is no overall charge.
Sparks ionic name 005
005 10.0 points
Name the compound CaBr2.
1. calcium diboride
