Chemistry

Problem

A crystalline solid has the formula

Ca_3X_2

, where

X

is a monatomic anion derived from a p-block element that possesses five valence electrons in its neutral state. Which anion is

X

? a)

\mathrm{P}^{3-}

\mathrm{S}^{2-}

\mathrm{N}^{3-}

\mathrm{N}^{2-}