Thallium

Name: Thallium
Symbol: Tl
Atomic number: 81
Atomic weight: 204.3833 (2)
CAS Registry ID: 7440-28-0
Group number: 13
Group name: (none)
Period number: 6
Block: p-block

I ate the thallium and got cancer.

by MavisBeacon August 22, 2003

thallium

A very toxic soft gray metallic chemical element with an atomic number of 81 and atomic symbol of Tl. It's sometimes used in things like electrical components and optical lenses. When combined with sulfur and oxygen, it was once widely used as rodent poisoning, but it was later outlawed in 1972 due to health concerns.

Person 1: I just ate thallium
Person 2: Well you're a fucking idiot because you're gonna die soon

by zvcxasdfkwyrio June 19, 2022

Thallium

Thallium is a chemical element with the symbol Tl and atomic number 81. It is a gray post-transition metal that is not found free in nature. When isolated, thallium resembles tin, but discolors when exposed to air. Chemists William Crookes and Claude-Auguste Lamy discovered thallium independently in 1861, in residues of sulfuric acid production.

NOTHING TO SEE HERE "THALLIUM"

by KoppaSummision October 16, 2023