Question

The radius of a cation is lesser than atom while that of anion is greater than the atom.Explain??​

Answer 1

Answer:

The radius of a cation is lesser than atom while that of anion is greater than the atom because -

1. they have lesser electrons

2. Anions are formed by the gain of electrons

3. When we consider effective nuclear charge then, the ions of greater nuclear charge attract those ten electrons more strongly and pull them in more tightly. Therefore, the radii of the ions in an isoelectronic series decrease as nuclear charge

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