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.