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Nobelium  SEE PERIODIC TABLE
see article  SEE FULL ARTICLE

Atomic Number102
Atomic SymbolNo
Atomic Weight[259 amu]
GroupRare Earth (Actinide Series)
Melting Point827 °C (1520.6 °F, 1100.15 °K)
First Ionization Potential6.65 eV
Ground State Electron Configuration5f14 6s2 6p6 6f2
Oxidation State(s)+2, +3
Selected Radioisotopes252No, 254No, 257No
Discovered byGhiorso; Sikkeland; Walton; Seaborg, 1958
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