Scientists have long understood the primary way H₃⁺ forms—when a hydrogen molecule (H₂ ... A similar pattern appears in methyl chloride (CH₃Cl) and methyl bromide (CH₃Br).

making hydrogen chloride. A simple molecule contains only a few atoms, so the sizes of atoms and simple molecules have a similar range of sizes. They are very small, typically around 0.1 nm or 10 ...