Which one has minimum (nearly zero) dipole moment?

If $H-X$ bond length is $2 \ \mathring{A}$ and $H-X$ has dipole moment $5.12 \times 10^{-30} \ C \cdot m$,the $\%$ of covalent character of the molecule is ............. $\%$

The geometry and dipole moment of $H_2S$ respectively are

If $Q$ is the magnitude of charge and $r$ is the distance between the centres of positive and negative charges,then the dipole moment $(\mu)$ is given by:

Which of the following compounds has the highest dipole moment $(D)$?

Explain dipole-dipole forces and their characteristics.