Question

why ionization energy of N>O​

Answer 1

Answer:

nitrogen atom has a first ionization energy of 14.53 eV , so it would be (b) . Since oxygen atom has a paired electron, it repels the other 2p electrons, which makes it easier to remove the first electron from oxygen atom.

Answer 2

Answer:

in 2nd and 3rd period doesn't follow regular trend. in this the S orbital is filled but the P orbital is half filled. so N is greater than O . Hope this helps you.

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