Question

electron affinity of chlorine is more than that of fluorine explain

Answer 1

Answer:

Fluorine, which is higher up the group then chlorine, has a lower electron affinity. This is because the electrons in the outermost shell of a fluorine atom are closer together. The electron gained also feels a great amount of repulsion from the electrons originally in the outermost shell.

The electron affinity of an element is the energy released when one mole of the element in the gaseous state each gain an electron under standard conditions.

Down a group, electron affinity typically decreases. This is because the atomic radius increases down a group. The electron gained ends up in the outermost shell. It is farther away from the nucleus and thus feels a weaker attraction. Less energy is released.

However, there are exceptions. Fluorine, which is higher up the group then chlorine, has a lower electron affinity. This is because the electrons in the outermost shell of a fluorine atom are closer together. The electron gained also feels a great amount of repulsion from the electrons originally in the outermost shell. Energy is required to keep the gained electron in the shell, causing fluorine to have a smaller electron affinity than chlorine.

Answer 2

Answer:

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