It would be. 2Fe + 3O2 ——> 2Fe03. You have to make oxygen 6 on both sides in order to balance, then you can do Fe. Which on the right would be 2 by making oxygen 6. Then add the 2 to the other side to balance it.
Answer:<em>if u change the number of neutrons u will .get an isotope of the same element. </em>
Explanation: <em>neutron can make an atom radioactive</em>
A molecule is larger because it is a bond of atoms.