Using the electronegativity values in the periodic table below, arrange the following covalent bonds - all commonly found in amino acids - in order of increasing polarity:
C−H, C−N, C−O, N−H, O−H
(a) C−H, C−N, N−H, C−O, O−H
(b) C−H, C−N, C−O, N−H, O−H
(c) C−N, C−H, C−O, O−H, N−H
(d) O−H, C−N, N−H, C−O, C−H
(e) C−H, N−H, C−N, C−O, O−H
Answer: (a) C−H, C−N, N−H, C−O, O−H