Which of the following statement concerning ionisation energy is not correct ?

Options

A. The second ionisation energy is always more than the first
B. Within a group, there is a gradual increase in ionisation energy because nuclear charge increases
C. Ionisation energy of `Be` is more than `B`
D. Ionisation energies of noble gases are high.

Answer

B

Explanation

In a group as the size increases therefore i.E. decreases.