Which bond in the methylamine molecule (CH3NH2) is the most polar?

• A. C–N
• B. N–H
• C. C–H
• D. C–C

Answer: (B)

Verified step by step guidance

1. Identify the bonds present in the methylamine molecule (CH\_3NH\_2): C–H, C–N, and N–H bonds.
2. Recall that bond polarity depends on the difference in electronegativity between the two atoms involved in the bond.
3. Look up the electronegativity values for the atoms: Carbon (C), Hydrogen (H), and Nitrogen (N).
4. Calculate the electronegativity differences for each bond: C–H, C–N, and N–H by subtracting the smaller electronegativity from the larger one.
5. Compare these differences; the bond with the greatest electronegativity difference is the most polar.