Question

what do you mean by electron gain enthalpy.......
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Answer 1

Answer:

the amount of energy released when an electron is added to an isolated gaseous atom. during the addition of an electron energy can either can be released or absorbed.

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Answer 2

Explanation:

Electron gain enthalpy is the energy required to add an electron in a neutral atom. Because, in most of the cases atom releases energy, the electron gain enthalpies are negative.