Nobelium: the essentials
- Name: nobelium
- Symbol: No
- Atomic number: 102
- Relative atomic mass (Ar): [ 259 ] (longest lived isotope)
- Standard state: presumably a solid at 298 K
- Appearance: unknown, but probably metallic and silvery white or grey in appearance
- Classification: Metallic
- Group in periodic table:
- Group name: Actinoid
- Period in periodic table: 7 (actinoid)
- Block in periodic table: f
- Shell structure: 184.108.40.206.32.8.2
- CAS Registry: 10028-14-5
Nobelium atoms have 102 electrons and the shell structure is 220.127.116.11.32.8.2. The ground state electronic configuration of neutral nobelium is [Rn].5f14.7s2 and the term symbol of nobelium is 1S0.
Nobelium is a radioactive "rare earth metal" named after Alfred Nobel who discovered dynamite.
Nobelium: physical properties
- Density of solid: (no data) kg m-3
- Molar volume: (no data) cm3
- Thermal conductivity: 10 (estimate) W m‑1 K‑1
Nobelium: heat properties
- Melting point: about 1100 [827 °C (1521 °F)] K
- Boiling point: (no data) K
- Enthalpy of fusion: 20.5 kJ mol-1
Nobelium: atom sizes
- Atomic radius (empirical): (no data) pm
- Molecular single bond covalent radius: 176 (coordination number 3) ppm
- van der Waals radius: (no data) ppm
- Pauling electronegativity: 1.3 (Pauling units)
- Allred Rochow electronegativity: 1.2 (Pauling units)
- Mulliken-Jaffe electronegativity: (no data)
Nobelium: orbital properties
- First ionisation energy: 643 (calculated) kJ mol‑1
- Second ionisation energy: 1250 kJ mol‑1
- Third ionisation energy: 2490 kJ mol‑1
- Universe: (no data) ppb by weight
- Crustal rocks: (no data) ppb by weight
- Human: (no data) ppb by weight
Nobelium: crystal structure
Nobelium: biological data
- Human abundance by weight: (no data) ppb by weight
Nobelium has no biological role.
Reactions of nobelium as the element with air, water, halogens, acids, and bases where known.
Nobelium: binary compounds
Binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and other compounds of nobelium where known.
Nobelium: compound properties
Bond strengths; lattice energies of nobelium halides, hydrides, oxides (where known); and reduction potentials where known.
Nobelium: historyNobelium was discovered by Nobel Institute for Physics and later by Seaborg and others at Berkeley, California, USA in 1958 at Sweden, USA. Origin of name: named after Alfred "Nobel", Swedish chemist who discovered dynamite, and founder of the Nobel Prizes.
Isolation: coming soon!