Question

The ionization potential of K is 2.4 eV. The electron
affinity of K+ will be
(a) 1.2eV
(b) 2.4eV
(c) 4.2eV
(d) 8.4eV​

Answer 1

Answer:

Explanation:

B)2.4 +'ve is right answer...

Answer 2

The electron affinity of K⁺ will be (b) 2.4 eV.

• Ionization Potential of an atom is the energy required to remove an electron from the isolated gaseous state of that atom. Generally it is positive. The process is represented by the following equation:

                             K₍g₎ → K⁺ + e⁻

• Electron affinity of an atom is the amount of the energy released or absorbed by an isolated gaseous atom when an electron is added to it. It can be positive or negative. The process is represented by the following equation:

                           K⁺ + e⁻  →  K₍g₎

So, here the two processes are opposite to each other. So, the values will be same.

If the ionization potential of K is 2.4 eV, the electron  affinity of K⁺ will be 2.4 eV.