Question

Which of the following has least polarity in bond?

• A. $H-F$
• B. $H-Cl$
• C. $H-O$
• D. $H-S$

Answer 1

The correct option is D $H-S$

The order of electronegativities is as follows:
$F>O>N>Cl>Br>I>S>C>H$
Now clearly the difference in electronegativities is minimum between sulphur and hydrogen. Therefore,$H-S$ bond will show minimum polar character. So, D is the correct answer.