Question

The second ionisation energy is always the first ionisation energy.

• A. greater than
• B. less than
• C. equal to

Answer 1

The correct option is A greater than

After removing one electron from the outermost shell of a neutral atom, the nucleus attracts the remaining electrons with a greater force (as positive charge > negative charge). Therefore, more energy is required to remove the second electron from the outermost shell.
Hence, second ionisation energy is always greater than first ionisation energy.