Question
Which bond is more polar in the following pairs of molecules:
(i) H3C – H, H3C – Br
(ii) H3C – NH2, H3C – OH
(iii) H3C – OH, H3C – SH
Solution
(i) C – Br bond is more polar because Br is more electronegative than H.
(ii) C – O bond is more polar because O is more electronegative than N.
(iii) C – O bond is more polar because O is more electronegative than S.
