The first diagram, Neon has 10 protons, with a positive charge, 10 neutrons, with a neutral charge, or 0 charge, and 10 electrons, with a negative charge the atomic number and mass of neon is 20, rounded to the nearest whole.
Hydrogen: 1 proton, 1 neutron
Carbon: Atomic mass of 12
Calcium:20 neutrons
Fluorine: 10 neutrons
Potassium: 20 neutrons
Oxygen: 8 protons
