NTA Abhyas JEE Main2020ChemistryGeneral Organic ChemistryPractice
Which of the following statement is correct with refrence to R S Θ and R O Θ . ?
Options
- AR S Θ is less basic and less nucleophilic than R O Θ
- BR S Θ is less basic but more nucleophilic than R O Θ
- CR S Θ is less basic and more nucleophilic than R O Θ
- DR S Θ is more basic but less nucleophilic than R O Θ
Correct answer
B. R S Θ is less basic but more nucleophilic than R O Θ
Step-by-step solution
Nucleophilic strength increases down a column of the Periodic Table (in solvents that can have hydrogen bonds, such as water, alcohols, thio alcohols). Nucleophilic strength R O Θ < R S Θ . Base strength R O Θ > R S Θ . Thus, R S Θ is more nucleophilic but less basic than R O Θ