Question

Electron gain enthalpy of noble gases are large positive why

Answer 1

hi friend....

Noble gases have large positive electron gain enthalpy because the extra electron has to be placed in the next higher principal quantum energy level there by producing highly unstable electronic configuration. Neon has the highest positive electrons gain enthalpy.

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Answer 2

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HERE IS UR ANSWER

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This is because there is no orbital shell free to place or remove an electron.