Question

The correct order of first ionization potential among following elements, Be, B, C, N and O is

• A. B < Be < C < O < N
• B. B < Be < C < N < O
• C. Be < B < C < N < O
• D. Be < B < C < O < N

Answer 1

The correct option is A B < Be < C < O < N

The energy required to remove the most loosely bound electron from an isolated gaseous atom is called the ionisation energy. The ionisation potential decreases as the size of the atom decreases. Atoms with fully or partly filled orbitals have high ionisation potential