Define Ionisation potential.

Distinguish between Ionisation Potential and Excitation Potential.

Fill in the blanks : The halogen with highest ionisation potential is …………

Which of the following elements has the highest ionisation potential ?

If the ionisation potential for hydrogen atom is 13.6 eV, then the wavelength of light required for the ionisation of hydrogen atom would be:

Between N and O, which one has higher ionisation potential ?

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