Answer :
Noble gases show no tendency to accept electron as they possess inert gas configuration(8 electrons in outer most shell).So it cannot accept any more electrons.So its electron gain enthalpy is zero.
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NOBLE GASES ARE CHEMICALLY STABLE AND DONOT GAIN OR LOOSES ELECTRONS HENCE ELECTRON GAIN ENTHALPY IS ZERO
HOPE THIS HELPS U....................
NOBLE GASES ARE CHEMICALLY STABLE AND DONOT GAIN OR LOOSES ELECTRONS HENCE ELECTRON GAIN ENTHALPY IS ZERO
HOPE THIS HELPS U....................