Assertion: berkelium's discovery | /r/HasProperty | element
Facets:
Source sentences:
text: IUPAC has accepted the discoveries of element 113 (nihonium/ununtrium), element 114 (flerovium/ununquadium), element 115 (moscovium/ununpentium), element 116 (livermorium/ununhexium), element 117 (tennessine/ununseptium) and element 118 (oganesson/ununoctium), thus completing the seventh row of the periodic table.