No. The five positive charges of the pentavalent Niobium cation are balanced by the negative charges of the five iodine anions - ie - Nb5+ I-5
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