The magnitude of the electrostatic force between two identical ions that are separated by a distance of $5.0 \times 10^{-10} \mathrm{m}$ is $3.7 \times 10^{-9}$
$\mathrm{N} .(\mathrm{a})$ What is the charge of each ion? (b) How many electrons are "missing" from each ion (thus giving the ion its charge imbalance)?