What are the basic properties of Promethium?
Promethium (symbol: Pm) is a lanthanide with atomic number 61. Its atomic mass is 145.0 u, and it belongs to period 6 and group 3.
Promethium (Pm) Properties and Facts
Element 61 - Lanthanide
What is the electron configuration of Promethium?
The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f⁵ 5s² 5p⁶ 6s²
What are the physical properties of Promethium?
Melting point: 1315.0 K
Boiling point: 3273.0 K
Density: 7.26 g/cm³
What are the known isotopes of Promethium?
- Pm-145: Half-life of 17.7 years
- Pm-147: Half-life of 2.62 years
What is the biological role and occurrence of Promethium?
Biological role: No biological role, synthetic element
Natural occurrence: Synthetic element