[Verse 1] Sodium, eleven at the top, Eleven protons, that's the starting spot. For sodium twenty-three, the mass number's given; Subtract eleven: twelve neutrons in the middle. Neutral means eleven electrons too; The proton count gives that clue. The table's decimal mass is an average; One isotope has its own mass number. [Chorus] From the inside out, Two, eight, one—count it out. Eleven altogether when I'm done; Sodium's outside ring has one. [Verse 2] For the first eighteen, our simplified rings Help us show electron arrangements. Fill two, then eight, then up to eight; Stop at the total, don't keep adding. The period gives occupied rings; The main-group column helps check the outside. Helium has two in its full first ring, Though group eighteen sits on the far-right side. [Final Chorus] From the inside out, Two, eight, one—count it out. Eleven altogether when I'm done; Sodium's outside ring has one.
