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Why Group –2 elements have positive electron gain enthalpy? |
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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.So, group 2 elements have positive electron gain enthalpies |
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