Formula of Molecule
In SPM, you need to know the formulae of the following molecules
| Fluorine | F2 | Hydrogen chloride | HCl |
| Chlorine | Cl2 | Hydrogen bromide | HBr |
| Bromine | Br2 | Hydrogen iodide | HI |
| Iodine | I2 | Nitric oxide | NO |
| Carbon dioxide | CO2 | Nitrogen dioxide | NO2 |
| water | H2O | Nitrous oxide | N2O |
| Ammonia | NH3 | Tetrachloromethane | CCl4 |
| Sulphur trioxide | SO3 | Hydrogen sulphide | H2F |
| Sulphur dioxide | SO2 | Glucose | C6H12O62 |