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Question

Question: The correct order of the size is-...

The correct order of the size is-

A

Ca2+> K+>Ar>Cl> S2–

B

K+> Ca2+>Cl>Ar> S2–

C

S2–>Cl>Ar> K+> Ca2+

D

S2–>Ar>Cl> Ca2+> K+

Answer

S2–>Cl>Ar> K+> Ca2+

Explanation

Solution

All the species are isoelectronic therefore greater the nuclear charge lesser will be the size.