Periodic Table of Elements

102

Nobelium

259.10

Nobelium was discovered by Albert Ghiorso, Glenn T. Seaborg, John R. Walton and Torborn Sikkeland in 1958 at the University of California, Berkeley.

Name: Nobelium
Symbol: No
Atomic number: 102
Atomic weight: 259.10
State: solid
Group, period, block: n/a, 7, f
Color: unknown
Classification: actinide
Electron configuration: 5f14 7s2
2,8,18,32,32,8,2

Physical properties

Density: no data
Melting point: 1100 K,827 °C,1521 °F
Boiling point: no data

Atomic properties

Oxidation states: 2, 3
Electronegativity: 1.3 (Pauling scale)
Ionization energies: 1st: 641.6 kJ·mol-1
Covalent radius: no data
Van der Waals radius: no data
  • No
  • Electron Configuration

Isotopes

Nobelium has no stable isotopes. The first isotope to be discovered was 254No in 1966.