Happy Henry Lives Beside Boron Cottage,
Near Our Friend, Nelly Nancy MgAllen.
Silly Patrick Stays Close.
Arthur Kisses Carrie.
| Atomic Number | Symbol | Name | Atomic Mass (amu, g/mol) |
|---|---|---|---|
| 1 | H | Hydrogen | 1.00797 |
| 2 | He | Helium | 4.00260 |
| 3 | Li | Lithium | 6.941 |
| 4 | Be | Beryllium | 9.01218 |
| 5 | B | Boron | 10.81 |
| 6 | C | Carbon | 12.011 |
| 7 | N | Nitrogen | 14.0067 |
| 8 | O | Oxygen | 15.9994 |
| 9 | F | Fluorine | 18.998403 |
| 10 | Ne | Neon | 20.179 |
| 11 | Na | Sodium | 22.98977 |
| 12 | Mg | Magnesium | 24.305 |
| 13 | Al | Aluminum | 26.98154 |
| 14 | Si | Silicon | 28.0855 |
| 15 | P | Phosphorus | 30.97376 |
| 16 | S | Sulfur | 32.06 |
| 17 | Cl | Chlorine | 35.453 |
| 18 | Ar | Argon | 39.948 |
| 19 | K | Potassium | 39.0983 |
| 20 | Ca | Calcium | 40.08 |