Classification of Elements and Periodicity in Properties — Chemistry STD 11 Science — Question

2. Cs⁺

Explanation:

Ionization Potential is defined as energy required to remove electron where as E.A is defined as energy released in adding an electron.

If we remove an electron from Cs it becomes Cs⁺.If we add an electron to Cs⁺ then it becomes Cs.

Hence adding electron to Cs⁺ is electron affinity where other is I.P both are reaching the same point.

Hence Ionization potential value of Cs is equal to the electron affinity value of its corresponding Cs⁺.