Question

Half-filled or completely filled sub-shells have lesser ionization energy comparitively. (True/False)

• A. True
• B. False

Answer 1

The correct option is B

False

Half filled or completely filled sub-shells tend to be more stable and thus it is more difficult to remove electron from these shells. So, ionization energy is higher.

$\to$ Half filled and completely filled sub-shells tend to be more stable because of symmetrical distribution of electrons and exchange energy.