Question

Can you correctly deduce the net charge on an $N{a}^{+}$ ion from the below options?

• A. $+1.6\times {10}^{-19}C$
• B. $-1.6\times {10}^{-19}C$
• C. $+1.6\times {10}^{19}C$
• D. $-1.6\times {10}^{19}C$

Answer 1

The correct option is A $+1.6\times {10}^{-19}C$

$N{a}^{+}$ is the ionic form of Sodium. Sodium, as we know has 11 electrons, 11 protons and 12 neutrons. On becoming an ion, sodium loses one electron and thus has 10 electrons and 11 protons. This imparts a net positive charge of one proton, which is, $+1.6\times {10}^{-19}$. Hence, the correct answer is
$+1.6\times {10}^{-19}C$.