Question

The order of electron gain enthalpy of halogen

Answer 1

ANSWER

Halogens have the most negative electron gain enthalpy in the respective periods of the periodic table. This is due to their small size and higher effective nuclear charge. Due to these two parameters halogens easily gain one electron to complete their octet and attain Noble gas configuration.

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Answer 2

Among halogens the order of electron affinity values is Cl>F>Br>I>At .