The electron gain enthalpy of noble gases is positive. Explain

1.	The electron gain enthalpy of noble gases is positive. Explain
Answer» \xa0Due to the stable configuration, they do not accept an electron and hence they have large positive electron gain enthalpy. An electron has to enter the next higher principal quantum level which leads to a very unstable electronic configuration.<br>Noble Gases have a full filled orbital in their last shell, they have a very stable electronic configuration, they don\'t need any extra electron.An electron has to enter the next higher principal quantum level which leads to a very unstable electronic configuration.by taking electron thair energy will be increased, but all atom wants to live in their least energy state...<hr>very short answer it is difficult to add an extra electron due to stable electronic configuration. so it needs energy to do so.

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