6 . 2 in its inner shell & the remaining 6 in its outer shell.
Answer:
A physical change, such as a state change or dissolving, does not create a new substance, but a chemical change does. In a chemical reaction, the atoms and molecules that interact with each other are called reactants. In a chemical reaction, the atoms and molecules produced by the reaction are called products.
Diffusion, facilitated diffusion, filtration, and osmosis
