In which of the following pair

CHEMISTRY · Single correct · AP · Chemistry · Atomic Structure and Properties · Atomic Structure and Properties

Problem

In which of the following pair, both the species are isoelectronic but the first one is large in size than the second? (1)

\text{S}^{2-}, \text{O}^{2-}

(2)

\text{Cl}^-, \text{S}^{2-}

(3)

\text{F}^-, \text{Na}^+

(4)

\text{N}^{3-}, \text{P}^{3-}