Chloride ion and potassium ion are isoelectronic. Then
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a
Potassium ion is relatively bigger
b
Depends on the other cation and anion
c
Their size are same
d
Chloride ion is bigger than potassium ion
answer is D.
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Detailed Solution
Chloride ion and potassium ion are ioselectronic, isoelectronic ions are those ions having same number of electrons.K = 2, 8, 8, 1 --- K+=2,8,8Cl = 2, 8, 7 --- Cl−=2, 8, 8Hence anion is bigger than cation