What are the basic properties of Astatine?
Astatine (symbol: At) is a halogen with atomic number 85. Its atomic mass is 210.0 u, and it belongs to period 6 and group 17.
Astatine (At) Properties and Facts
Element 85 - Halogen
What is the electron configuration of Astatine?
The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 6s² 6p⁵
What are the physical properties of Astatine?
Melting point: 575.0 K
Boiling point: 610.0 K
Density: 7.0 g/cm³
What are the known isotopes of Astatine?
- At-210: Half-life of 8.1 hours
- At-211: Half-life of 7.2 hours
- At-212: Half-life of 0.314 seconds
- At-213: Half-life of 125 nanoseconds
- At-214: Half-life of 0.0005 seconds
What is the biological role and occurrence of Astatine?
Biological role: Highly radioactive and toxic
Natural occurrence: Found in uranium ores