1861-1862 Thallium

The book of science

Tom Sharp

London, LilleWilliam Crookes, Claude-Auguste Lamy elements


Atomic number 81

My thallium

Thallium became the third element discovered by flame spectroscopy and the third element named after the color of its spectral lines. Based on its bright green spectral lines, William Crookes named it thallos, Latin for “green shoot.”

See also in The book of science:

Readings on wikipedia:

Other readings:

  • Thallium,” Elementymology & Elements Multidict, by Peter van der Krogt