why halogens have high electron affinity
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The less valence electrons an atom has, the least likely it will gain electrons. Electron affinitydecreases down the groups and from right to left across the periods on the periodic table because the electrons are placed in a higher energy level far from the nucleus, thus a decrease from its pull.
If you found this helpful then plzzz mark it as brainliest
If you found this helpful then plzzz mark it as brainliest
shruti1618:
Then you give perfecf answer
you never answer why does electron affinity increases or decreases across the table and gave a general answer.
Answered by
9
This is due to the fact that halogens have only one less atom to fill its outer octet and hence when an atom is added, it attains a stable configuration that of the nearest noble gas to the corresponding halogen.
This leads to the release in high energy (due to highly stable state thus achieved) and hence halogens have high electron affinity.
This leads to the release in high energy (due to highly stable state thus achieved) and hence halogens have high electron affinity.
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