Smaller the size of ion

Assertion: Among isoelectronic species, the cation with the greater positive charge will have a smaller radius. Reason :Greater is the attraction of the electrons to the nucleus, smaller is the size of atom/ion.

Assertion:Among isoelectronic species,the cation with the greater positive charge will have a smaller radius. Reason:Greater the attraction of the electrons to the nucleus,smaller is the size of atom/ion.

Assertion:Among isoelectronic species,the cation with the greater positive charge will have a smaller radius. Reason:Greater the attraction of the electrons to the nucleus,samller is the size of atom/ion.

Give reasons why? The size of cation is smaller than the size of parent atom.

The correct reason for smaller size of alkaline earth metals than that of alkali metal is that

Why is the size of cation smaller then its parent atom?

The edge length of sodium chloride unit cell is 564 pm. If the size of Cl^- ion is 181 pm. The size of Na^+ ion will be