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Solution


Q.

The difference between electron gain enthalpies will be maximum between:           [2023]
1 Ar and Cl  
2 Ne and Cl  
3 Ne and F  
4 Ar and F  

Ans.

(2)

Cl has maximum –ve ΔHeg and Ne has most +ve ΔHeg, hence difference will be maximum for Ne and Cl.

Element ΔHeg(kJ/mole)
F – 333
Cl – 349
Ne + 48
Ar + 116