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#73 Tantalum - rarity ZERO-KELVIN
1st ionization energy 7.89 eV 0.85%
appearance Gray metallic with bluish tint 0.85%
atomic mass 180.95 u 0.85%
atomic number 73 0.85%
atomic radius 217 picometers (van der Waals radius) 2.54%
boiling point 5731 K or 5458 °C or 9856 °F 0.85%
cas number 7440-25-7 0.85%
cas number of (cl2) - 99.15%
category Transition metals 25.42%
crystal structure BCC (Body centered cubic) 7.63%
density 16.65 g/cm3 0.85%
electronegativity 1.5 (Pauling scale) 1.69%
electronic configuration [Xe] 4f14 5d3 6s2 0.85%
electrons 73 0.85%
electrons arrangement 2, 8, 18, 32, 11, 2 0.85%
main isotopes 181Ta 0.85%
melting point 3290 K or 3017 °C or 5463 °F 0.85%
neutrons 108 0.85%
position Group: 5, Period: 6, Block: d 0.85%
rarity ZERO-KELVIN 33.33%
state Solid 72.88%
sublimation point - 99.15%
symbol Ta 0.85%
valence electrons - 61.02%
who discovered Anders Gustaf Ekeberg (in 1802) 0.85%

Total Rarity Score: 2011.41

Rarity: #44/354

Tantalum

Collection: Bohring Atoms