Question

what do you mean by Valence Electrons

Answer 1

The number of electrons present in the outer most shell is known as valence electon and the outer most shell is known as valence shell. So it can be also defined as the number of electro in the valence shell is known as valence electros. In a valence shell maximum there can be only 8 electrons.

Answer 2

electrons which are present in the outermost orbit of an atom and are available  for bonding......