In some chemical reactions, an element or compound loses or gains electron. Why is this so?

Asked by SINDHUJA SRIVASTAVA | 5th Apr, 2015, 01:29: PM

Expert Answer:

In a chemical reaction, an atom of an element looses or gain electron to complete its octet and get noble gas configuration.
For example, There are 6 electrons in the outermost shell of oxygen. It takes two electron to complete its octet.

Answered by Prachi Sawant | 5th Apr, 2015, 03:16: PM