Covalent Bonds Between Which of the Following Pairs of Atoms

Question

Covalent bonds between which of the following pairs of atoms are nonpolar?
A)C-C
B)C-H
C)O-H
D)a and b

Accepted Answer

Nonpolar covalent bonds occur between atoms with similar electronegativities. Carbon (C) and hydrogen (H) have relatively similar electronegativities, making C-H bonds slightly polar, but for the purpose of this question, it's considered less polar compared to O-H. C-C bonds are purely nonpolar as they involve the same atom. Therefore, both A and B are considered correct in the context of this question, making D the correct choice.