Alexander_Calciummode

<--Previous Back to Base Next--> Bibliography (sources) --> = = = = = = = = =A Model of Calcium= In a Calcium atom there are: 20 Protons (positively charged) in the Nucleus, 20 Neutrons (neutrally charged) in the Nucleus, 20 Electrons (negatively charged) in 4 Energy levels. In the first energy level there are 2 Electrons, in the second there are 8, in the third there are 8, and in the fourth there are 2 Electrons