93Np
Neptunium
Actinide
Properties of Neptunium
- Atomic number (Z)
- 93
- Symbol
- Np
- Name
- Neptunium
- Atomic mass
- 237 u
- Period
- 7
- Group
- —
- Family
- Actinides (f-block)
- Classification
- Actinide
- Electron configuration
- [Rn] 5f⁴ 6d¹ 7s²
About Neptunium
Neptunium is a chemical element with symbol Np and atomic number 93 (atomic mass of about 237 u). It is classified as a actinide on the periodic table.
On the periodic table, Neptunium is located in period 7, outside the numbered groups (f-block), belonging to the actinides (f-block) family. An element's position reveals trends in its properties, such as atomic radius, electronegativity and metallic character.
The electron configuration of Neptunium is [Rn] 5f⁴ 6d¹ 7s², which determines how it forms chemical bonds and takes part in reactions.