Geo-Scientist Prelims 2022 Chemistry Q90: The eclipsed conformation of CH₃CH₂Cl is 15 kJ/mol and is less…

The eclipsed conformation of CH₃CH₂Cl is 15 kJ/mol and is less stable than the staggered conformation. How much is H, Cl eclipsing interaction worth in destabilization? (where H, H eclipsing interaction worth = 4 kJ/mol)

1. (a) 8 kJ/mol
2. (b) 11 kJ/mol
3. (c) 7 kJ/mol
4. (d) 12 kJ/mol