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  4. Elements of which of the following groups will form anions most readily?

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Q. Elements of which of the following groups will form anions most readily?

AIPMTAIPMT 1992The p-Block Elements - Part2

Solution:

Halogens have maximum electron gain enthalpy due to the fact that the atoms of these elements have only one electron less than the stable noble gas $(ns^2np^6)$ configuration. Therefore, they have maximum tendency to accept the electron to form negative ion (anion).