Atomic mass <span>of zinc ( zn ) is 65 u
Answer B</span>
The part of the atom that is involved in chemical changes is A. electron. The electrons that are in the most outer shells are called valence electrons which are easily removed or shared to form bonds. Valence electrons are related to the number of valence electrons
Answer: sorry I’m not sure
Odjri:
Answer:
23
Explanation:
we do not care about electrons, so 11 + 12 = 23
It would be Magnesium = 1 atom, Oxygen = 2 atoms, Hydrogen = 2 atoms. It has 5 atoms total. There is 1 magnesium and you multiply each element by the the 2 outside the parenthesis to get 2 oxygen and 2 hydrogen.