Thallium

How many chemistry jokes have i told? let me thallium

element symbol.

Tl

atomic number.

81

atomic mass.

204.38

what's in their atoms?

81 protons

123 neutrons

81 electrons

metal,metaloid, or non-metal?

Metal

melting point.

303.5 degrees Celsius.

boiling point.

1457.0 degrees Celsius

usage

rat, and ant poisoning, detecting infrared radiation.

sources

crookesite,hutchinsonite,lorandite.