Identify the wrong statement in the following ?

Options

A. Amongst isolelectrnic species, smaller the positive charge on the cation, smaller is the ionic radius
B. Amongst isoelectrnic species, greater the negtive charge on the anion, larger is the ionic radius
C. Atoimc radius of the elements increases as one moves down the first group of the periodic table
D. Atomic radius of the elements decreases as one moves across from left to right in the 2nd period of the peridoic table

Answer

A, B

Explanation

Atomic radius of the elements decreases across a period from left to right due to increase in effective nuclear charge. On moving down a group, since, number of shells increases, so atomic radius increases.
Amongst isoelectronic species, ionic radius increases with increase in negative charge or decrease in positive charge.