How many electrons elements are present in period 2 ?

Explanation for basic character?

The number to the right of an element's symbol (ex. c-12) identifies the of an isotope.

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