Q.
Chloride ion and potassium ion are isoelectronic. Then
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199
Classification of Elements and Periodicity in Properties
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Solution:
Chloride ion and potassium ion are isoelectronic, isoelectronic ions are those ions having the same number of electrons.
K=2,8,8,1K+=2,8,8
Cl=2,8,7Cl−=2,8,8