Assertion: einsteinium's symbol | /r/HasProperty | atomic number
Facets:
Source sentences:
text: Einsteinium is a synthetic element with the symbol Es and atomic number 99.
text: The einsteinium also known as aten is a synthetic element that we find inside the periodic table whose symbol is Es and its atomic number is 99.
text: Einsteinium is a synthetic element with the symbol Es and atomic number 99.