First 20 elements: protons, electrons and neutrons
Hydrogen, H
1 proton, 1 electron, 0 neutrons
Neon, Ne
10 protons, 10 electrons, 10 neutrons
Sodium, Na
11 protons, 11 electrons, 12 neutrons
Magnesium, Mg
12 protons, 12 electrons, 12 neutrons
Aluminium, Al
13 protons, 13 electrons, 14 neutrons
Silicon, Si
14 protons, 14 electrons, 14 neutrons
Phosphorus, P
15 protons, 15 electrons, 16 neutrons
Sulfur, S
16 protons, 16 electrons, 16 neutrons
Chlorine, Cl
17 protons, 17 electrons, 18 neutrons
Argon, Ar
18 protons, 18 electrons, 22 neutrons
Potassium, K
19 protons, 19 electrons, 20 neutrons
Helium, He
2 protons, 2 electrons, 2 neutrons
Calcium, Ca
20 protons, 20 electrons, 20 neutrons
Lithium, Li
3 protons, 3 electrons, 4 neutrons
Beryllium, Be
4 protons, 4 electrons, 5 neutrons
Boron, B
5 protons, 5 electrons, 6 neutrons
Carbon, C
6 protons, 6 electrons, 6 neutrons
Nitrogen, N
7 protons, 7 electrons, 7 neutrons
Oxygen, O
8 protons, 8 electrons, 8 neutrons
Fluorine, F
9 protons, 9 electrons, 10 neutrons