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Nobelium

Metal radioactivesynthetic
Symbol: No
Atomic number: 102
Atomic mass: (259.1011)
Group: Actinide
CAS-number: 10028-14-5

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Physical data

Electronic dataThermal dataSteric data
Shells: 2, 8, 18, 32, 32, 8, 2
Orbitals: [Rn] 5f14 7s2
Electronegativity: --, 1.2
1. Ionization potential: 6.65 eV
2. Ionization potential: -- eV
3. Ionization potential: -- eV
Oxidation states: 3, 2
Electrical conductivity: --
Melting point: -- °C
Boiling point: -- °C
Specific heat: -- J/gK
Heat of fusion: -- kJ/mol
Heat of vaporization: -- kJ/mol
Thermal conductivity: 0.1 W/cmK
Atomic radius: -- Å
Ionic radius: -- Å
Covalent radius: -- Å
Atomic volume: -- cm³/mol
Density (293 K): -- g/cm³
Crystal structure: --

Isotopes

NuclideAbundance [%]MassSpinHalflifeDecay modeDecay tree
253No 0 253.091 9/2 1.7m α, EC View
254No 0 254.091 0 55s α, EC, SF View
255No 0 255.093 1/2 3.1m α, EC View
257No 0 257.097 7/2 25s α View

Other info

Name origin:Named in honor of Alfred Nobel, who invented dynamite and founded Nobel prize.
Description:Synthetic radioactive metal.
Discovered by:Nobel Institut für Physik
Year:1957
Place:Sweden
Sources:Made by bombarding curium with carbon-13
Use(s):It has no significant commercial applications.