Symbol
Te
Atomic Number
52
Atomic Mass
127.6
Protons
52
Neutrons
76
Electrons
52
Type
Metalloid
Isotopes
Tellurium-120, Tellurium-122, Tellurium-123, Tellurium-124, Tellurium-125, Tellurium-126, Tellurium-128, Tellurium-130
Discovery Year
1782
Discovered By
Franz-Joseph Müller von Reichenstein
Group
16
Period
5
Boiling Point
1261°F
Melting Point
662°F
Electron Configuration
[Kr] 5s² 4d¹⁰ 5p⁴
Density (g/cm³)
6.24
Crystal Structure
Hexagonal
Magnetism
Diamagnetic
Abundance in Earth's Crust
0.0001%
Phase at Room Temperature
Solid