Ionisation enthalpy of C (1086), N (1402) and F (1681) kJ "mol"^(-1)respectively then which one ionisation enthalpy of oxygen 1310 and 1510 kJ mol"^(-1)?

Ionisation enthalpy of C (1086), N (1402) and F (1681) kJ "mol"^(-1)re

1.	Ionisation enthalpy of C (1086), N (1402) and F (1681) kJ "mol"^(-1)respectively then which one ionisation enthalpy of oxygen 1310 and 1510 kJ mol"^(-1)?
Answer» SOLUTION :Because order of ionisation enthalpy is `C lt O lt N lt F`, so are is 1310 KJ `"MOL"^(-1)`.