Question

For NBr3, provide the Lewis dot structure, shape, polarity of bonds, and whether it is a polar molecule or not.

A) Lewis dot structure, trigonal pyramidal, polar bonds, polar molecule
B) Lewis dot structure, trigonal pyramidal, nonpolar bonds, nonpolar molecule
C) Lewis dot structure, tetrahedral, polar bonds, polar molecule
D) Lewis dot structure, tetrahedral, nonpolar bonds, nonpolar molecule

Answer 1

The Lewis dot structure for NBr3 is trigonal pyramidal, with polar bonds between nitrogen and bromine atoms. NBr3 is a polar molecule.

Step-by-step explanation:

The Lewis dot structure for NBr3 shows that there are three single bonds between nitrogen (N) and bromine (Br) atoms, with one lone pair of electrons on the nitrogen atom. The shape of NBr3 is trigonal pyramidal, where the three bonded bromine atoms are in a plane, and the nitrogen atom is above the plane. The bonds between nitrogen and bromine are polar since bromine is more electronegative than nitrogen. Therefore, NBr3 is a polar molecule.