Question

Which element has the most favorable (most negative) electron affinity? C N B Li?

Answer 1

I would say N is the correct answer 

Answer 2

Electron affinity is indeed the additional energy shift of the atom when an electron to a neutral gaseous atom generates a negative ionic bond.

• The feature is only utilized to measure atoms and molecules in the gaseous state because contact with the other atoms or molecules would affect their energy levels in a solid or liquid state.
• As electrons are added to an atom, the increased negative electrode strains the existing electrons, allowing energy is released. Since the Nitrogen arrangement is: $\bold{1s^2, 2s^2, 2p^3}$.
• The P orbital is half-filled hence more stable. Since $\bold{p^2}$ is less stable in carbon, it will strive to gain 1 electron to achieve a half-filled form of a p orbital.

Therefore, the final answer is "C".

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