Question

which of the following configuration has more ionization energy​

Answer 1

Answer:

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Answer 2

Answer:

Comparing to other electronic configuration, half filled orbitals are highly stable.

So, 1s 2 2s 2 2p 3

has half-filled orbital in it valence p-shell, so it is more stable.

If an atom has fully or half- filled electronic configuration in the valence shell, the ionization energy will be higher. Here we can understand that among C, N, O and Ne (2nd period elements) the highest ionization energy will be for Ne. This is because the Ne atom has completely filled p subshell.