Thallium

Thallium is a soft, malleable metal with toxic properties, often used in electronics and optics.

Atomic Structure

thallium atom electronic configuration

Atomic Information

Property	Value
Atomic Number	81
Symbol	Tl
Atomic Mass	204.38 u
Electron Configuration	[Xe] 4f¹⁴ 5d¹⁰ 6s² 6p¹
State at Room Temperature	Solid

Uses of Thallium

Used in low-melting glass for optical purposes.
Used in electronics for semiconductor applications.
Used historically as a poison and in insecticides.