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#27 Cobalt - rarity ZERO-KELVIN
1st ionization energy 7.881 eV 0.85%
appearance Bluish lustrous grey metallic 0.85%
atomic mass 58.933 u 0.85%
atomic number 27 0.85%
atomic radius 192 picometers (van der Waals radius) 1.69%
boiling point 3200 K or 2927 °C or 5301 °F 0.85%
cas number 7440-48-4 0.85%
cas number of (cl2) - 99.15%
category Transition metals 25.42%
crystal structure HCP (Hexagonal close packing) 6.78%
density 8.9 g/cm3 0.85%
electronegativity 1.88 (Pauling scale) 0.85%
electronic configuration [Ar] 3d7 4s2 0.85%
electrons 27 0.85%
electrons arrangement 2, 8, 15, 2 0.85%
main isotopes 59Co 0.85%
melting point 1768 K or 1495 °C or 2723 °F 0.85%
neutrons 32 0.85%
position Group: 9, Period: 4, Block: d 0.85%
rarity ZERO-KELVIN 33.33%
state Solid 72.88%
sublimation point - 99.15%
symbol Co 0.85%
valence electrons - 61.02%
who discovered Georg Brandt in 1735 0.85%

Total Rarity Score: 2091.71

Rarity: #24/354

Cobalt

Collection: Bohring Atoms