Models of Bonding & Structure B.1 The Ionic Model (id: 9931f287c)

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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