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Which of the following has highest ionization energy?

Option: 1

B


Option: 2

C


Option: 3

N


Option: 4

O


Answers (1)

best_answer

N has \mathrm{2s^22p^3} configuration which is more stable than configuration of O which is \mathrm{2s^22p^4}. This stability is due to half filled p-orbital configuration. Thus it has a greater ionization energy than O while B & C have larger size than N and have lesser ionization energy.

Therefore, option (3) is correct.

Posted by

Pankaj Sanodiya

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