Assertion: einsteinium's compound | /r/HasProperty | with halogen
Facets:
Source sentences:
text: Some properties of einsteinium: - Es is a solid, metal, artificial, radioactive, unstable, dangerous - valences: 2,3,4 - Pauling electronegativity: 1,3 - electron configuration: [Rn]5f11.7s2 - atomic number 99 - known compounds of einsteinium are with oxygen an halogens