Question

Ionic radius of K+ is smaller than that of Cl- both are isoelectronic.explain it

Answer 1

Answer:

Chlorine, on the other hand, only has 17. This is important because in the case of the potassium atom, the outermost electrons will be attracted by the nucleus more. In other words, K+ has bigger effective nuclear charge than Cl−, which translates to a bigger net positive charge felt by the outermost electrons.