102No
Nobelium
Actinide
Properties of Nobelium
- Atomic number (Z)
- 102
- Symbol
- No
- Name
- Nobelium
- Atomic mass
- 259 u
- Period
- 7
- Group
- —
- Family
- Actinides (f-block)
- Classification
- Actinide
- Electron configuration
- [Rn] 5f¹⁴ 7s²
About Nobelium
Nobelium is a chemical element with symbol No and atomic number 102 (atomic mass of about 259 u). It is classified as a actinide on the periodic table.
On the periodic table, Nobelium 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 Nobelium is [Rn] 5f¹⁴ 7s², which determines how it forms chemical bonds and takes part in reactions.