JEE Main Chemistry question

Chemistry Classification of Elements and Periodicity in Properties JEE Main

The first and second ionization energies for K are 4.34 eV and 31.63 eV. What is the value (with the sign) of its electron gain enthalpy?

Answer: -4.34

Solution

Electron gain enthalpy of an atom is numerically the negative of its own first ionization energy only in the special case being

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Question ID VK-133886