Question

$O{H}^{-}$ is more basic than $S{H}^{-}$ because

• A. Oxygen is more electronegative than sulphur
  
• B. Oxygen is smaller than sulphur
  
• C. O and S are different hybridised
  
• D. none of the three

Answer 1

The correct option is B

Oxygen is smaller than sulphur

Sulphur is larger than oxygen due to which electrons on sulphur are more dispersed and hence lesser available than that on oxygen.