The periodic table, electron shells, and orbitals - Khan Academy
https://www.khanacademy.org/science/ap-chemistry-beta/x2eef969c74e0d802:atomic-structure-and-properties/x2eef969c74e0d802:atomic-structure-and-electron-configuration/a/the-periodic-table-electron-shells-and-orbitals-article
Atomic structure and properties > Atomic structure and electron configuration. The periodic table, electron shells, and orbitals. Introduction. At some point in your chemistry education, you may have been introduced to the song “The Elements,” in which Tom Lehrer does a rapid-fire musical rendition of all the elements' names.
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