Beryllium bromide (BeBr2) is considered a nonpolar molecule because the electronegativity difference between beryllium (Be) and bromine (Br) is very small. Beryllium has a low electronegativity value (1.57) while bromine has a higher electronegativity value (2.96). This small difference in electronegativity results in a nonpolar covalent bond between beryllium and bromine, meaning that the distribution of electrons in the molecule is symmetrical and there are no significant dipole moments present. Therefore, beryllium bromide does not have a net dipole moment and is considered nonpolar.
