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The correct order of second ionisation p...

The correct order of second ionisation potentials of carbon, nitrogen, oxygen and fluroine is

A

C gt N gt O gt F

B

O gt N gt F gt C

C

O gt F gt N gt C

D

F gt O gt N gt C

Text Solution

Verified by Experts

The correct Answer is:
C
For second ionisation potential, electron has to be removed from valence shell of the following ions:

Ionisation energy increases from left to right in a period. However, removal of electron from half-filled or fully filled subshell requires more energy. The order for 2nd IE is : O > F > N
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Knowledge Check

  • The correct order of first ionisation potential is

    A
    `KgtNagtLi`
    B
    `BegtMggtCa`
    C
    `BgtCgtN`
    D
    `GegtSigtC`

  • Which has the highest second ionisation potential ?

    A
    Nitrogen
    B
    Carbon
    C
    Oxygen
    D
    Fluorine