Question

Which has the smallest size ?

• A. $N{a}^{+}$
• B. $M{g}^{2+}$
• C. $A{l}^{3+}$
• D. $P^{5+}$

Answer 1

Answer: (D)

As the nuclear charge per electron is maximum in $P^{5+}$. Therefore, its size is smallest.