Lithium is in Group I of the Periodic Table

CHEMISTRY · Single correct · A Level · Chemistry · Bonding · Bonding

Problem

Lithium is in Group I of the Periodic Table. Nitrogen is in Group V of the Periodic Table. Lithium reacts with nitrogen to form the ionic compound lithium nitride,

\text{Li}_3\text{N}

. What happens to the electrons when lithium atoms and nitrogen atoms form ions?

option	lithium	nitrogen
A	each lithium atom loses one electron to form an $\text{Li}^+$ ion	each nitrogen atom gains three electrons to form an $\text{N}^{3-}$ ion
B	each lithium atom loses one electron to form an $\text{Li}^+$ ion	each nitrogen atom gains five electrons to form an $\text{N}^{5-}$ ion
C	each lithium atom gains one electron to form an $\text{Li}^-$ ion	each nitrogen atom loses three electrons to form an $\text{N}^{3+}$ ion
D	each lithium atom gains one electron to form an $\text{Li}^-$ ion	each nitrogen atom loses five electrons to form an $\text{N}^{5+}$ ion

(A) each lithium atom loses one electron to form an

\text{Li}^+

ion; each nitrogen atom gains three electrons to form an

\text{N}^{3-}

ion (B) each lithium atom loses one electron to form an

\text{Li}^+

ion; each nitrogen atom gains five electrons to form an

\text{N}^{5-}

ion (C) each lithium atom gains one electron to form an

\text{Li}^-

ion; each nitrogen atom loses three electrons to form an

\text{N}^{3+}

ion (D) each lithium atom gains one electron to form an

\text{Li}^-

ion; each nitrogen atom loses five electrons to form an

\text{N}^{5+}

ion

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