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d. Na, Al 3+<br />
e. S 2- , Se 2-<br />
____ 183. Consider the formation of one formula unit of AlF3 from neutral atoms. In the process, each aluminum atom<br />
__________ electron(s) and each fluorine atom __________ electron(s).<br />
a. gains three; loses one<br />
b. loses three; gains one<br />
c. loses three; gains three<br />
d. loses one; gains three<br />
e. gains one; loses three<br />
____ 184. The formula for the simple ionic compound of calcium and nitrogen is __________.<br />
a. CaN<br />
b. Ca2N<br />
c. Ca2N3<br />
d. CaN2<br />
e. Ca3N2<br />
____ 185. Which of the following formulas is incorrect?<br />
a. Li3N<br />
b. Mg2O<br />
c. KI<br />
d. NaBr<br />
e. SrS<br />
____ 186. Which of the following is the correct Lewis dot formula for H2S?<br />
a.<br />
b.<br />
c.<br />
d.<br />
e.<br />
____ 187. The Lewis structure for the carbonate ion, CO3 2- , shows __________ doubles bond(s), __________ single<br />
bond(s) and __________ lone pair(s) on the central atom.<br />
a. 3, 1, 2<br />
b. 1, 2, 0<br />
c. 2, 2, 1<br />
d. 2, 1, 1<br />
e. 2, 1, 2<br />
____ 188. When writing the relationship among N, A, and S for H2CO3, N = __________, A = __________, and S =<br />
__________.<br />
N A S<br />
a. 36 24 12<br />
b. 36 26 10<br />
c. 34 22 12<br />
d. 40 16 14
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