Periodic Table 
| Nobelium| Symbol | No | | Atomic Number | 102 | Relative Atomic Mass 12C = 12.0000 | [ 259 ] 259.1010 58 min Neutrons 157 | | Significant Atomic Mass | 260 Neutrons 158 | | Atomic Radius pm | - | First Ionisation Energy kJ mol -1 | 642 | | Ionisation Energy (eV) | 6.6500 | | Electronegativity | 1.3 | | Density kg m -3 | - | | Molar Volume cm 3 | - | Thermal Conductivity W m -1 K -1 | 10 [300 K] (est.) | | Melting Point K | - | | Boiling Point K | - | | Number of Isotopes | 14 |  | 252 No 2.3 s 253 No 1.6 min 254 No 51 s 255 No 3.1 min 256 No 2.91 s 257 No 25 s 258 No 1.2 ms 259 No 58 min 260 No 106 ms 262 No 5 ms | | Inner + outer Shells | | | Inner + outer Orbitals | | | Filling Orbital | | | Ground State Electron Configuration | | | | Ground State Electron Configuration with free Orbitals (n=16) |  | | | Ground State Electron Configuration with compressed Orbitals (n=162) |  | | | | Singularity | | | | | s | p | d | f | g | h | i | j | 1 | 2 | | | | | | | | 2 | 2 | 6 | | | | | | | 3 | 2 | 6 | 10 | | | | | | 4 | 2 | 6 | 10 | 14 | | | | | 5 | 2 | 6 | 10 | 14 | 18 | | | | 6 | 2 | 6 | 10 | 14 | 18 | 22 | | | 7 | 2 | 6 | 10 | 14 | 18 | 22 | 26 | | 8 | | | | | | | | |
| | | | Term Symbol | 1S 0 | | CAS Reg-ID: | 10028-14-5 | | Obsolete Names | Unnilbium, Unb eka-ytterbium
| | Discovery | Discovered by A. Ghiorso, T. Sikkeland, G.T. Seaborg and J.R. Walton (Berkeley, USA, April 1958) | | Name Derived From | Named after Alfred Nobel (b. Oct. 21, 1833, Stockholm, Sweden /d. Dec. 10, 1896, San Remo, Italy) | Swedish chemist, engineer, and industrialist who invented dynamite and other, more powerful explosives and who also founded the Nobel Prizes. Alfred Bernhard Nobel was the fourth son of Immanuel and Caroline Nobel. Immanuel was an inventor and engineer who had married Caroline Andrietta Ahlsell in 1827. The couple had eight children, of whom only Alfred and three brothers reached adulthood. Alfred was prone to illness as a child, but he enjoyed a close relationship with his mother and displayed a lively intellectual curiosity from an early age. He was interested in explosives, and he learned the fundamentals of engineering from his father. Immanuel, meanwhile, had failed at various business ventures until moving in 1837 to St. Petersburg in Russia, where he prospered as a manufacturer of explosive mines and machine tools. The Nobel family left Stockholm in 1842 to join the father in St. Petersburg. Alfred's newly prosperous parents were now able to send him to private tutors, and he proved to be an eager pupil. He was a competent chemist by age 16 and was fluent in English, French, German, and Russian, as well as Swedish. |
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