Question

which diatomic molecule has the largest dipole moment?
answer:
a hf
b hcl
c hbr
d hi

Explanation:

Dipole moment depends on electronegativity difference. Fluorine (\(F\)) is the most electronegative element among \(F\), \(Cl\), \(Br\), \(I\). In \(HF\), the electronegativity difference between \(H\) and \(F\) is the largest among \(H - X\) (\(X = F, Cl, Br, I\)) bonds. Larger electronegativity difference leads to larger dipole moment.

Answer:

A. HF