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#99 Einsteinium - rarity SPINNIN'IN
1st ionization energy 6.42 eV 0.85%
appearance Silvery 1.69%
atomic mass 252 u 0.85%
atomic number 99 0.85%
atomic radius 245 picometers (van der Waals radius) 2.54%
boiling point - 18.64%
cas number 7429-92-7 0.85%
cas number of (cl2) - 99.15%
category Inner transition metals 23.73%
crystal structure FCC (face centered cubic) 11.02%
density 8.84 g/cm3 0.85%
electronegativity 1.3 (Pauling scale) 9.32%
electronic configuration [Rn] 5f11 7s2 0.85%
electrons 99 0.85%
electrons arrangement 2, 8, 18, 32, 29, 8, 2 0.85%
main isotopes - 7.63%
melting point 1133 K or 860 °C or 1580 °F 0.85%
neutrons 153 1.69%
position Group: actinides, Period: 7, Block: f 10.17%
rarity SPINNIN'IN 33.33%
state Solid 72.88%
sublimation point - 99.15%
symbol Es 0.85%
valence electrons - 61.02%
who discovered Albert Ghiorso and his team (in 1952) 1.69%

Total Rarity Score: 1456.69

Rarity: #97/354

Einsteinium

Collection: Bohring Atoms