Question

what is the overall polarity of h - c≡n: this molecule? nonpolar polar

Explanation:

• Molecular geometry: The \(H - C\equiv N\) molecule has a linear geometry.
• Electronegativity differences: Nitrogen (\(N\)) is more electronegative than carbon (\(C\)) and hydrogen (\(H\)). The \(C - N\) bond is polar (since \(N\) pulls electrons more strongly than \(C\)), and the \(C - H\) bond is also polar (but less so than \(C - N\)).
• Dipole moment: In a linear molecule like \(HCN\), the individual bond dipoles do not cancel each other out. The overall dipole moment of the \(HCN\) molecule is non - zero.

Answer:

polar