Identify the wrong statement.

Options

A. Amongst the isoelectronic species , smaller the positive charge on cation , smaller is the ionic radius
B. Amongst isoelectric species greater the negative charge on the anion , larger is the ionic radius
C. Atomic 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 `2^(nd)` period of the periodic table.

Answer

a

Explanation

In isoelectronic species, have same number of electrons in them. When the charge is less positive it means that electrons are being added. Hence the size will increase.