Question

Phosphide ion has the electronic structure similar to that of

• A. Nitride ion
• B. Fluoride ion
• C. Sodium ion
• D. Chloride ion

Answer 1

Answer: (D)

Chloride ion

Answer 2

$P^{3-} = 1s^22s^22p^63s^23p^6$ $Cl^- = 1s^22s^22p^63s^23p^6$ Both $P^{3-}$ and $Cl^-$ have 18 electrons each.