"The Elements" is a song by musical humorist and lecturer Tom Lehrer, which recites the names of all the chemical elements known at the time of writing, up to number 102, nobelium. It was written in 1959 and can be found on his albums Tom Lehrer in Concert, More of Tom Lehrer and An Evening Wasted with Tom Lehrer. The song is sung to the tune of the Major-General's Song from The Pirates of Penzance by Gilbert and Sullivan.
The song is also included in the musical revue Tom Foolery, along with many of Lehrer's other songs.
The ordering of elements in the lyrics fits the meter of the song, and includes much alliteration, and thus has little or no relation to the ordering in the periodic table. This can be seen for example in the opening and closing lines:
There's antimony, arsenic, aluminum, selenium,
And hydrogen and oxygen and nitrogen and rhenium,
...
And argon, krypton, neon, radon, xenon, zinc, and rhodium,
And chlorine, carbon, cobalt, copper, tungsten, tin, and sodium.
These are the only ones of which the news has come to Harvard,
And there may be many others, but they haven't been discovered.