Terbium (Tb) Properties and Facts

Element 65 - Lanthanide

What are the basic properties of Terbium?

Terbium (symbol: Tb) is a lanthanide with atomic number 65. Its atomic mass is 158.93 u, and it belongs to period 6 and group 3.

What is the electron configuration of Terbium?

The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f⁹ 5s² 5p⁶ 6s²

What are the physical properties of Terbium?

Melting point: 1629.0 K
Boiling point: 3503.0 K
Density: 8.23 g/cm³

What are the known isotopes of Terbium?

  • Tb-159: 100.0% abundance

What is the biological role and occurrence of Terbium?

Biological role: No known biological role
Natural occurrence: Found in rare earth minerals

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