Assertion : Ionisation enthalpy of noble gases is zero
Reason :Noble gases have fully field valance shell

Valency of noble gases is zero.

Ionisation potential of noble gases are____.

The high ionisation enthalpies of noble gases is due to:

The high ionisation potential of noble gases is due to :

Ionisation enthalpy decreases down the group in noble gases. Why ?

(A): Electron gain enthalpy of noble gases is very less (R): Atoms of noble gases have completely filled orbitals