• # question_answer Chloride ion and potassium ion are isoelectronic. Then [KCET 2002] 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

Chloride ion and potassium ion are isoelectronic, isoelectronic ions are those ions having same number of electrons. $K=2,\,8,\,8,\,1$ ${{K}^{+}}=2,\,8,\,8$ $Cl=2,\,8,\,7$ $Cl=2,\,8,\,8$