Question

Which of the following statement is correct about ionization potential?

• A. It is independent of atomic radii
• B. It remains constant with change in atomic radii
• C. It increases with an increase in atomic radii
• D. It decreases with an increase in atomic radii

Answer 1

The correct option is D It decreases with an increase in atomic radii

The ionization energy or ionization potential is the energy necessary to remove an electron from the neutral atom.

It is a minimum for the alkali metals which have a single electron outside a closed shell. It generally increases across a row with a decrease in atomic radii. In the periodic table, it is maximum for the noble gases which have closed shells.

Hence, the correct option is $\text{D}$