Assign oxidation numbers to the substances in this reaction. 2 Ca(s) + O2(g) + 2 Caos).
Which species was reduced?
Ozº
Са0
Cat2
0-2

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