Statement-I: Energy is released when O-atom gains one electron but energy is absorbed when 2nd electron is gained.Statement-II: 2nd electron gain enthalpy is -ve and first is +ve
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a
Both Statement-I and Statement-II are correct
b
Statement-I is correct and Statement-II is incorrect
c
Statement-I is incorrect and Statement-II is correct
d
Both statement-I and Statement-II are incorrect
answer is B.
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Detailed Solution
1st electron gain enthalphy is -ve and 2nd electron gain enthalphy is +ve due to inter elctronic repulsions between uni -ve ion and addition of 2nd electron
Statement-I: Energy is released when O-atom gains one electron but energy is absorbed when 2nd electron is gained.Statement-II: 2nd electron gain enthalpy is -ve and first is +ve