Which single bond present in nitroglycerin is the least polar?

Which single bond present in nitroglycerin is the least polar?

• A. C-H
• B. C-O
• C. C-C
• D. O-N

Answer: (C)

The least polar single bond in nitroglycerin is indeed the bond between carbon and carbon (C-C). To understand why this is correct, it's essential to consider the electronegativities of the atoms involved. Carbon is a non-metal with an electronegativity of about 2.5 on the Pauling scale, and it shares similar electronegativity with another carbon atom significantly; therefore, the C-C bond is considered nonpolar under normal circumstances, as both atoms exert equal pull on the shared electrons. In contrast, the other bonds involve either oxygen or nitrogen, which are more electronegative than carbon. For instance, C-O bonds are polar because oxygen has a higher electronegativity (3.5) compared to carbon, resulting in a significant difference in electronegativity and, consequently, a dipole moment. Similarly, O-N and C-H bonds also exhibit polarity due to the differences in electronegativity between the atoms involved. Thus, the C-C bond stands out as the least polar bond in nitroglycerin because it involves two identical atoms with equal sharing of electrons, leading to no partial charges or dipole moments.

The least polar single bond in nitroglycerin is indeed the bond between carbon and carbon (C-C). To understand why this is correct, it's essential to consider the electronegativities of the atoms involved.

Carbon is a non-metal with an electronegativity of about 2.5 on the Pauling scale, and it shares similar electronegativity with another carbon atom significantly; therefore, the C-C bond is considered nonpolar under normal circumstances, as both atoms exert equal pull on the shared electrons.

In contrast, the other bonds involve either oxygen or nitrogen, which are more electronegative than carbon. For instance, C-O bonds are polar because oxygen has a higher electronegativity (3.5) compared to carbon, resulting in a significant difference in electronegativity and, consequently, a dipole moment. Similarly, O-N and C-H bonds also exhibit polarity due to the differences in electronegativity between the atoms involved.

Thus, the C-C bond stands out as the least polar bond in nitroglycerin because it involves two identical atoms with equal sharing of electrons, leading to no partial charges or dipole moments.