The electronic configuration of some elements is given in Column-I and their electron gain enthalpies are given in Column-II. Match the electronic configuration with the electron gain enthalpy:
| Column-I (Electron configuration) | Column-II (Electron gain enthalpy/ kJ mol¯1) | ||
| A. | \(1 s^2 2 s^2 2 p^6\) | (i) | \(-53\) | 
| B. | \(1 s^2 2 s^2 2 p^6 3 s^1\) | (ii) | \(-328\) | 
| C, | \(1 s^2 2 s^2 2 p^5 \) | (iii) | \(-141\) | 
| D. | \( 1 s^2 2 s^2 2 p^4 \) | (iv) | \(+48\) | 
| Options: | A | B | C | D | 
| 1. | (iv) | (i) | (ii) | (iii) | 
| 2. | (i) | (ii) | (iii) | (iv) | 
| 3. | (i) | (iv) | (iii) | (ii) | 
| 4. | (iv) | (i) | (iii) | (ii) | 
 
                    
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