Yes, HSiBr3 is a polar molecule. This is because of the difference in electronegativity between silicon (Si) and bromine (Br) causes an uneven distribution of electron density in the molecule, leading to a net dipole moment.
No its not polar
Polar contains polar. Non-polar contains nothing.
ClO4 is polar.
Nonpolar
Polar Polar
polar
IOF5 is polar - O has a double bond
Polar
polar
polar
polar
polar