What are the basic properties of Dubnium?
Dubnium (symbol: Db) is a transition metal with atomic number 105. Its atomic mass is 270.0 u, and it belongs to period 7 and group 5.
Dubnium (Db) Properties and Facts
Element 105 - Transition Metal
What is the electron configuration of Dubnium?
The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 6s²
What are the physical properties of Dubnium?
Melting point: 2400.0 K
Boiling point: 2400.0 K
Density: 29.3 g/cm³
What are the known isotopes of Dubnium?
- Db-262: Half-life of 34 seconds
- Db-263: Half-life of 24 seconds
- Db-264: Half-life of 1.5 hours
- Db-265: Half-life of 2.0 hours
- Db-266: Half-life of 1.8 hours
What is the biological role and occurrence of Dubnium?
Biological role: Highly radioactive and toxic
Natural occurrence: Synthetic element