The first ionization potential of Na is 5.1 eV. The value of electron gain enthalpy of Na + will be ?

Asthe energy is conserved, the energfy released after gaining the electron i.e the electron gain enthalpy=- ionisation energy=-5.1eV
It maeans that this amount of energy is released.
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Dear Student,
Please find below the solution to your problem.

As the energy is conserved, the energy released after gaining the electron i.e the electron gain enthalpy = – ionisation energy = – 5.1eV
It maeans that this amount of energy is released.

Thanks and Regards