Select the correct mass for each of the samples described below. 3.01 × 1023 molecules H2O

8.32 × 1020 formula units CaBr2

1.93 × 1026 molecules XeF6

Which statement explains why the bonds between non metals tend to be covalent? the bonds are found to be nondirectional they have large differences in electronegativity they have small differences in electronegativity they have ions that produce an electrostatic pull