Question

The 1st ionisation enthalpy of o2 is samller campared to N2.why.​

Answer 1

Answer:

Electronic configuration for:

Oxygen(O): 1s²2s²2p⁴

Nitrogen(N): 1s²2s²2p³

Ionization Enthalpy is the energy required to remove loosely held electron from the valence shell of an atom.

For Oxygen, there are 6 electrons in the valence shell while for Nitrogen, there are 5 electrons in the valence shell. Also, we know that half filled and full filled orbitals are more stable. Here, electron in both atom ends in the p orbital. Also, in Nitrogen the orbital are half filled as there can be total of 6 electrons in p orbital.

Hence, the energy required to remove an electron from valence shell of Nitrogen requires more energy.

Thus, Nitrogen has more IE than Oxygen

Explanation:

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Answer 2

Answer:

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