define the term valence electronHow many valence electrons are in an atom of aluminum? an atom of helium?
Just look at the sweatshops near you.
clothes are commonly imported by US clothing manufacturers from countries like guatemala, belize, el salvador, hondorus, singapore, taiwan, china, phillipines, I can name all the countries of the world, and some textiles are produced by prisoners in US penitentiaries
A valence electron is an electron which lies in the outer energy level of an atomHelium has 2Aluminum has 3.
