Question

value of electron gain enthalapy of nitrogen and berallium is near zero.​

Answer 1

Answer:

Beryllium and nitrogen electronic configuration

Be: 1s2 2s2

N : 1s2 2s2 2p3

Be has complete 2s orbital and N has half filled 2p orbital which are much stable than partially filled orbitals.

So adding an electron will disturb the stable configuration and will increase the repulsion of electrons.

So to decrease this repulsion and increase stability Be and N instead of releasing energy provide energy to the electrons to reduce the repulsion and hence the electron gain enthalpy is positive and not negative.

Explanation:

Answer 2

Answer:

Beryllium and nitrogen

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