Question

which of the following group of metals have positive value of electron gain enthalpy
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Answer 1

Answer:

please follow me

Explanation:

Answer. Group 2 elements such as Berylium, Magnesium, Calcium etc have positive electron gain enthalpies. This is because they are electropositive and need to supplied energy externally if electron is to be added in their already fullfilled s orbital, note that they have an electronic configuration of ns2.

Answer 2

Explanation:

metals are not here means options are not given