Question

why is size of Na is larger thanNa+​

Answer 1

Na+ ion is smaller than Na because Na looses its one electron to become Na+ ion so the positive charge of nucleus per electron present will increase and it result more electrostatic force of attraction increases . Hence size decreases.

Answer 2

Answer:

Yes Na+ is smaller than Na because Na+ is formed when an electron is lost from the Na atom,Thus the effective nuclear charge increases bcz the number of protons exceeds the number of electrons . This results in bringing the valence shell a little closer to the nucleus because of a very strong nuclear pull.

Hope it will help you!!!