How do we formulate "lithium nitride"?

1 Answer
Feb 18, 2017

$\text{Nitride anion}$ is ${N}^{3 -}$............

Explanation:

And thus $\text{lithium nitride}$ is formulated as $L {i}_{3} N$.

For nitrogen, $Z = 7$, and there are clearly 7 protons, 7 massive, positively charged nuclear particles. To deliver the charge, there MUST be 10 electronic charges, i.e. 10 electrons. And the ion takes THREE lithium counterions to balance the charge,