Obscene mnemonics (idea)

This is a fairly simple (and obscene) mnemonic for the diatomic molecules--the atoms listed, when in a gaseous state, exist in pairs: i.e., O₂

That's for Oxygen, Hydrogen, Chlorine, Fluorine, Bromine, Iodine, and Nitrogen, or O₂, H₂, Cl₂, F₂, Br₂, I₂, and N₂, respectively. I apologize for the double adverb, but it is a necessary evil.