Thallium

(noun.) a soft grey malleable metallic element that resembles tin but discolors on exposure to air; it is highly toxic and is used in rodent and insect poisons; occurs in zinc blende and some iron ores.

录入:李莉斯

• Many hitherto unknown metals have also been discovered through the agency of the spectroscope, among which may be named caesium, rubidium, thallium, and indium. Edward W. Byrn. 十九世纪发明进展.
• Thallium discovered by Crookes, and Indium by Reich and Richter. Edward W. Byrn. 十九世纪发明进展.

手打:露西娅