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#85 Astatine - rarity SPINNIN'IN
1st ionization energy 9.5 eV 0.85%
appearance Dark gray (predicted) 0.85%
atomic mass 210 u 0.85%
atomic number 85 0.85%
atomic radius 202 picometers (van der Waals radius) 4.24%
boiling point - 18.64%
cas number 7440-68-8 0.85%
cas number of (cl2) - 99.15%
category Halogens 3.39%
crystal structure FCC (face centered cubic) 11.02%
density no data 0.85%
electronegativity 2.2 (Pauling scale) 5.08%
electronic configuration [Xe] 4f14 5d10 6s2 6p5 0.85%
electrons 85 0.85%
electrons arrangement 2, 8, 18, 32, 18, 7 0.85%
main isotopes 210At and 211At 0.85%
melting point - 13.56%
neutrons 125 2.54%
position Group: 17, Period: 6, Block: p 0.85%
rarity SPINNIN'IN 33.33%
state Solid 72.88%
sublimation point - 99.15%
symbol At 0.85%
valence electrons 7 3.39%
who discovered Emilio Segre, Dale Corson, Kenneth Ross Mackenzie (in 1940) 0.85%

Total Rarity Score: 1703.8

Rarity: #89/354

Astatine

Collection: Bohring Atoms