Question

Compare the radii of two species X and Y. Give reason for your answer.
X has 12 proton and 12 electron.

Answer 1

Explanation:

As both X and Y had 12 protons both have atomic number 12 that is magnesium. In the case of Y, we have only 10 electrons because of this the effect of nuclear charge on the electrons is more than that on 12 electrons(happens for the same number of protons). Hence, the radii of Y is smaller than that of X.