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)|

Answer

To solve the question regarding the processes involving chlorine (Cl), we need to analyze each of the given processes in terms of ionization energy (I.E.) and electron affinity (E.A.).

### Step-by-Step Solution:

1. **Understanding Ionization Energy (I.E.) and Electron Affinity (E.A.):**
- Ionization energy is the energy required to remove an electron from a neutral atom in the gas phase.
- Electron affinity is the energy released when an electron is added to a neutral atom in the gas phase.

2. **Analyzing the Processes:**
- **Process (i):** Cl + E.A. → Cl^(-)
- This process describes the addition of an electron to chlorine, which is the definition of electron affinity.

- **Process (ii):** Cl^(-) + I.E. → Cl
- This process describes the removal of an electron from Cl^(-), which is the definition of ionization energy. It is essentially the reverse of the first process.

- **Process (iii):** Cl + I.E. → Cl^(+)
- This process describes the removal of an electron from a neutral chlorine atom, which is indeed the definition of ionization energy.

- **Process (iv):** Cl^(+) + I.E. → Cl^(2+)
- This process describes the removal of an electron from a positively charged chlorine ion (Cl^(+)), which is also a valid ionization energy process.

3. **Comparing the Processes:**
- Processes (i) and (ii) are related: Process (ii) is the reverse of Process (i), meaning the ionization energy of Cl^(-) to Cl is equal to the negative of the electron affinity of Cl to Cl^(-).
- Processes (iii) and (iv) are also related: Process (iv) is the continuation of the ionization process, where Cl^(+) loses another electron.

4. **Conclusion:**
- The correct statement regarding the processes is that the ionization energy of process (ii) is equal to the electron affinity of process (i). Therefore, the correct answer is option (i).

### Final Answer:
The correct statement regarding the processes is: **Option (i)** - "Cl + E.A. → Cl^(-) and Cl^(-) + I.E. → Cl are related."