Question

Compare the radii of two species X and Y. Give reasons for your answer.
(a) X has 12 protons and 12 electrons
(b) Y has 12 protons and 10 electrons

Answer 1

The atomic radius of X is greater than that of Y. While, X is the element with equal number of protons and electrons. Y is its ion after the loss of two electrons. For the same element. atomic radius of cation is less than that of the electroneutral element.