Atomic+Structure--fbk-

=**!Atomic Structure!**=


 * Atomic Number --- 20
 * Symbol -- Ca
 * Atomic Mass -- 40.078
 * Number of Protons -- 20 +
 * Number of Neutrons -- 20 N
 * Number of Electrons -- 20 electrons[[image:020_symbol.gif width="374" height="188" align="right"]]