Which of the following statement is correct regarding following process ?
`(i) Cl overset(E.A)to Cl^(-) " " (ii) Cl^(-) overset(I.E.)to Cl`
`(iii) Cl overset(I.E)to Cl^(+) " " (iv) Cl^(+) overset(I.E.)to Cl^(2+)`

Options

A. |I.E. of process (ii)| = |E.A. of process (i)|
B. |I.E. of process (iii)| = |I.E. of process (ii)|
C. |I.E. of process (iv)| = |E.A. of process (i)|
D. |I.E. of process (iv)| = |I.E. of process (iii)|

Explanation

To determine which of the statements regarding the processes involving chlorine is correct, we need to analyze each process step by step.

### Step-by-Step Solution:

1. **Understanding Electron Affinity (E.A.)**:
- The process `(i) Cl + E.A. → Cl^(-)` involves chlorine gaining an electron to form a chloride ion (Cl^-).
- This process releases energy, which is characteristic of electron affinity.
- Therefore, this process is correct as it describes the formation of Cl^- from Cl.

2. **Understanding Ionization Energy (I.E.)**:
- The process `(ii) Cl^(-) + I.E. → Cl` involves the removal of an electron from the chloride ion (Cl^-), resulting in a neutral chlorine atom (Cl).
- This process requires energy, which is the definition of ionization energy.
- Thus, this process is also correct as it describes the ionization of Cl^- back to Cl.

3. **Analyzing the Third Process**:
- The process `(iii) Cl + I.E. → Cl^(+)` involves removing an electron from a neutral chlorine atom to form a positively charged ion (Cl^+).
- This process requires energy, making it correct as it describes the ionization of Cl.

4. **Analyzing the Fourth Process**:
- The process `(iv) Cl^(+) + I.E. → Cl^(2+)` involves removing another electron from the Cl^+ ion to form Cl^(2+).
- This process also requires energy, thus it is correct as it describes the ionization of Cl^+.

### Conclusion:
All four processes are correct in terms of their definitions and the energy changes involved. However, the question asks for the correct statement regarding these processes.

The correct interpretation is:
- The magnitude of ionization energy for process (ii) is equal to the electron affinity of process (i).
- Similarly, the ionization energy for process (iv) is also valid.

Thus, the correct answer is option (i) is the correct answer of this question.