Answer:
O-H
N-H
Br-H
C-H
Si-H
Explanation:
Oxygen having electronegativity of 3.44 eV while hydrogen having electronegativity 22.2 eV. So oxygen will attract electrons more strongly than hydrogen because of higher electronegativity and produce a dipole. the electronegativity difference between them is 1.24eV which means it is polar compounds because if the electronegativity difference between bonded molecules are 0.4-2.0 eV indicated the compounds is polar. And same rule apply for rest of the options.
