Question

Which of the following is the correct sequence of the bond length?

• A. $S-H>C-H>N-H>O-H$
• B. $C-H>S-H>O-H>N-H$
• C. $O-H>N-H>C-H>S-H$
• D. $S-H>O-H>N-H>C-H$

Answer 1

The correct option is A $S-H>C-H>N-H>O-H$

Bond length is directly proportional to the difference in the size of two atoms and inversely proportional to the electronegativity difference between two atoms.

The correct sequence of the bond length is: $S-H>C-H>N-H>O-H$.

Hence option A is the correct answer.