Question

If a species has $16$ protons, $18$ electrons and $16$ neutrons, find the species and its charge

• A. $S^{1-}$
• B. $Si^{2-}$
• C. $P^{3-}$
• D. $S^{2-}$

Answer 1

Answer: (D)

$S^{2-}$

Answer 2

$16p$ means $z = 16$
$18e^{-}$ means , $2$ unit negative charge is present.
Hence species is $S^{-2}$