MHT CET202620 April 2026Evening ShiftChemistryGeneral Organic ChemistryActual
Which one of the following series contains only electrophiles?
Options
- AR-OH , Cl ^+, NH ₃
- BH ₂ O , R ₂ N ^-, H ₃ O ^+
- CBF ₃, SO ₃, NO ^+
- DAlCl ₃, R-NH ₂, PCl ₃
Correct answer
C. BF ₃, SO ₃, NO ^+
Step-by-step solution
Electrophiles are electron-deficient species that can accept an electron pair. They are either positively charged or neutral molecules with an incomplete octet or highly polar bonds. In the first series, R-OH and NH ₃ have lone pairs on oxygen and nitrogen respectively, making them nucleophiles. In the second series, H ₂ O and R ₂ N ^- have lone pairs and a negative charge respectively, making them nucleophiles. In the third series, BF ₃ is an electron-deficient Lewis acid with an incomplete octet. SO ₃ has a highl