Atomic no | Elements | Symbols |
1 | Hydrogen | H |
2 | Helium | He |
3 | Lithium | Li |
4 | Beryllium | Be |
5 | Boron | B |
6 | Carbon | C |
7 | Nitrogen | N |
8 | Oxygen | O |
9 | Fluorine | Fl |
10 | Neon | Ne |
11 | Sodium | Na |
12 | Magnesium | Mg |
13 | Aluminium | Al |
14 | Silicon | Si |
15 | Phosphorus | P |
16 | Sulphur | S |
17 | Chlorine | Cl |
18 | Argon | Ar |
19 | Potassium | K |
20 | Calcium | Ca |