What are the basic properties of Neptunium?
Neptunium (symbol: Np) is a actinide with atomic number 93. Its atomic mass is 237.0 u, and it belongs to period 7 and group 3.
Neptunium (Np) Properties and Facts
Element 93 - Actinide
What is the electron configuration of Neptunium?
The electron configuration is: 1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s²
What are the physical properties of Neptunium?
Melting point: 917.0 K
Boiling point: 4175.0 K
Density: 20.2 g/cm³
What are the known isotopes of Neptunium?
- Np-235: Half-life of 396 days
- Np-236: Half-life of 154,000 years
- Np-237: Half-life of 2.14 million years
- Np-238: Half-life of 2.11 days
- Np-239: Half-life of 2.36 days
What is the biological role and occurrence of Neptunium?
Biological role: No known biological role
Natural occurrence: Synthetic element