Answer
Please see the work below.
Work Step by Step
We know that $Na^+$ has 11 protons and 10 electrons.
$Ca^{+2}$ has 20 protons and 18 electrons.
$Al^{+3}$ has 13 protons and 10 electrons.
$Fe^{+2}$ has 26 protons and 24 electrons.
$I^-$ has 53 protons and 54 electrons.
$F^-$ has 9 protons and 10 electrons.
$S^{-2}$ has 16 protons and 18 electrons.
$O_2^-$ has 8 protons and 10 electrons.
$N_3^-$ has 7 protons and 10 electrons.
