What are the basic properties of Protactinium?
Protactinium (symbol: Pa) is a actinide with atomic number 91. Its atomic mass is 231.04 u, and it belongs to period 7 and group 3.
Protactinium (Pa) Properties and Facts
Element 91 - Actinide
What is the electron configuration of Protactinium?
The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 6s²
What are the physical properties of Protactinium?
Melting point: 1841.0 K
Boiling point: 4300.0 K
Density: 15.4 g/cm³
What are the known isotopes of Protactinium?
- Pa-231: Half-life of 32,760 years
- Pa-233: Half-life of 27 days
- Pa-234: Half-life of 6.7 hours
- Pa-234m: Half-life of 1.17 minutes
- Pa-235: Half-life of 24.1 minutes
What is the biological role and occurrence of Protactinium?
Biological role: No known biological role
Natural occurrence: Found in uranium ores