Question

The second ionisation energy means the energy required to remove the electron from the corresponding monovalent cation of the respective atom. For IE2​, electronic configuration of C+,N+,O+ and F+-ions which are as follows.
C+=2s2,2p1
N+=2s2,2p2
O+=2s2,2p3
F+=2s2,2p4.

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Answer 1

Answer:

Ionisation energy means the energy required to remove an electron from the outermost orbital.

The second Ionisation energy is more than the first ionisation energy.