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Be and ne have positive values of electron gain enthalpy againstgeneral trend in period |
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Answer» The ELECTRONIC configuration of Be is 2S2, Since it has completely filled outer shells which is a stable configuration. It becomes ENERGETICALLY unfavourable to remove or ADD an electron and it has positive electron gain enthalpy. Similarly, Ne is a noble gas and FULLY filled outer shell thus its electron gain enthalpy is positive. |
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