Question

In the formation of a chloride ion, from an isolated gaseous chloride atom. 3.8 eV energy is released, which would be equal to__________.

• A. electron affinity of $C{l}^{-}$
• B. ionisation potential of Cl
• C. electronegativity of Cl
• D. ionisation potential of $C{l}^{-}$

Answer 1

The correct option is D ionisation potential of $C{l}^{-}$

3.8 eV energy is released on adding one electron so this is the same amount which will be needed to remove the same electron. Hence, we can say that Ionisation potential of $C{l}^{-}$ is 3.8 eV.