Connecting Chemistry

Tellurium

Atomic symbol: Te
Atomic number: 52
Atomic mass: 127.60

Appearance: Silvery-gray crystalline solid or brown-black powder at 25°C

Group: 16
Period: 5
Series: Metalloids
Block: p
Electron configuration: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s²

Brittle, superconducting, and mildly toxic.

Commonly used in copper and steel alloys.

Fun Fact! While tellurium is very rare on Earth, discovered in ancient starlight, it is far more abundant in space.

https://www.space.com/14651-rare-earth-element-tellurium-ancient-stars.html