The molecules that have an overall dipole moment are H₂S. The correct option is B.
What is a dipole moment?
A dipole moment is created when the charges are separated. There are two types of dipole: one is an electric dipole, which separates the negative and positive charge of an electromagnetic system.
Dipole moment is caused between ions when there is ionic bond and between atoms when there is a covalent bond. The dipole moment is formed when there is a difference in electronegativity.
The more the electronegativity, the dipole moment increases. The dipole moment of H₂S is 0.95 D. The electronegativity between hydrogen and sulfur is very high, therefore its dipole moment is also than others.
Thus, the correct option is C, H₂S.
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