NBr3 a) dispersion forces b) dipole-dipole forces c) hydrogen bonding

b) dipole-dipole forces

Explanation:

Hello,

In this case, it is widely known that NBr₃ is a polar molecule since it has a trigonal pyramidal geometrical structure in which nitrogen has a lone pair of electrons and three bonds with three bromine atoms which are polar, due to the fact that bromine is less electronegative than nitrogen. causing the overall compound to be polar, as the dipoles are not cancelled. Therefore, the strongest forces are b) dipole-dipole forces among dipoles.

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im pretty sure its b