Question

Halogens have the highest values of electron affinity in their respective periods. Give the reason

Answer 1

Answer:

Electron affinity reflects the ability of an atom to accept an electron. Group VIIA elements, the halogens, have highest electron affinities because the addition of an electron to an atom results in a completely filled shell.

Explanation:

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Answer 2

The high electron affinities of the halogens are a result of their small size, high effective nuclear charge and having an almost complete outer shell of electrons.

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