#hydride dipole moment

Which group 17 element forms a hydride with the highest dipole moment?

Dipole moment depends on electronegativity difference and bond length. HF (F, highest electronegativity, shortest bond) has the highest dipole moment among HF, HCl, HBr, and HI.

Ref: NCERT Class 11 Chemistry > Chapter 3: Classification of Elements and Periodicity in Properties > Topic: Electron Gain Enthalpy and Electronegativity and Valency