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The relationship between \( 1^{\text {st }} \) and \( 2^{\text {nd }} \) electron gain
P enthalpy of oxygen atom \( (\mathrm{O}) \) would be-

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(1) Both values of electron gain enthalpy are negative.
(2) The \( 1^{\text {st }} \) electron gain enthalpy of \( (\mathrm{O}) \) is negative while \( 2^{\text {nd }} \) is positive.
(3) Both values of electron gain enthalpies are positive.
(4) The 1st electron gain enthalpy of (O) is positive while \( 2^{\text {nd }} \) is negative.
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