102Unknown
No 259 Atomic mass · uActinides
Nobelium
Nobelium is a synthetic chemical element with symbol No and atomic number 102. It is named in honor of Alfred Nobel, the inventor of dynamite and benefactor of science. A radioactive metal, it is the tenth transuranic element and is the penultimate member of the actinide series.
Discovery 1957 (Joint Institute for Nuclear Research)
K2L8M18N32O32P8Q2
Physical properties
Values for the element in its standard state.
- Density
- Not available
- Melting point
- 1,100K
- Boiling point
- Not available
- Atomic radius
- Not available
- Bonding type
- Not recorded
- Molar heat
- Not available
Inside the atom
Electron arrangement and the energy behind its behavior.
Full electron configuration
1s, 2 electrons; 2s, 2 electrons; 2p, 6 electrons; 3s, 2 electrons; 3p, 6 electrons; 3d, 10 electrons; 4s, 2 electrons; 4p, 6 electrons; 4d, 10 electrons; 5s, 2 electrons; 5p, 6 electrons; 4f, 14 electrons; 5d, 10 electrons; 6s, 2 electrons; 6p, 6 electrons; 5f, 14 electrons; 7s, 2 electrons;
[Rn] represents 86 core electrons. The full view shows them explicitly.
102 electrons Orbital order preserved from source
- Electronegativity
- 1.3Pauling scale
- First ionization energy
- 642kJ/mol
- Electron affinity
- Not available
- Van der Waals radius
- Not available
No NobeliumAtomic number 102
642kJ/mol
Atomic numberGaps indicate unavailable data
About nobelium
- Appearance
- Not recorded
- Discovery
- 1957 (Joint Institute for Nuclear Research)
- Data source
- Read the reference
A missing value means it is unavailable in this reference dataset. Values can vary with measurement method and conditions.