本题目来源于试卷: Models of Bonding & Structure B.1 The Ionic Model，类别为 IB化学
[单选题]
What is the formula of the compound formed between lithium and nitrogen?
A. $Li{N_3}$
B. $Li{N_2}$
C. $L{i_2}{N_3}$
D. $L{i_3}N$
参考答案: D
本题详细解析:
Lithium is in group 1 and so forms $L{i^+}$ ions. The formula of the nitride ion is $N^{3-}$ as nitrogen is in group 15. For the positive and negative charges to cancel out, three$L{i^+}$ ions are needed for each $N^{3-}$ ion.
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