MEDIUMMCQ SINGLEJEE Mains ChemistryInorganic ChemistryPeriodic PropertiesIonization Enthalpy

The correct order of second I.E. of C, N, O and F are in the order

A.F > O > N > C

B.C > N > O > F

C.O > N > F > C

D.O > F > N > C✓ Correct

Explanation

2 1 2 2 2 3 2 4 2 2 2 2 2 2 2 2 C N O F C N O F s p s p s p s p Stable Oxygen is stable after losing one electron, so its 2 . . I E Will be highest, rest of follow rule 1 . . I E size So O F N C for 2 . . I E

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