Nobelium

Symbol: No
Atomic number: 102
Category: actinides
Group: n/a
Period: 7
Block: f
Atomic weight: (259) g/mol
Electrons per shell: 2, 8, 18, 32, 32, 8, 2
CAS number: 10028-14-5
Phase: solid
Density: unknown
Melting point: unknown
Boiling point: unknown
Crystal structure: unknown
Oxidation states: 2, 3
Electronegativity: unknown
Name's origin: Alfred Nobel
Name's meaning: in honor of the Swedish chemist
Facts:
- was first correctly identified in 1956 by scientists at the Flerov Laboratory of Nuclear Reactions in Dubna, Russia
- was proposed with names joliotium and flerovium
- the appearance of this element is unknown, however it is most likely silve
- if sufficient amounts of nobelium were produced, it would pose a radiation hazard
- seventeen radioisotopes of nobelium have been characterized, with the most stable being nobelium-259 with a half-life of 58 minutes
- is a synthetic element a