Unbinilium, 120 Ubn Theoretical element Pronunciation Cèṭa'an:Infobox element/pronunciation Alternative names element 120, eka-radium Allotropes Cèṭa'an:Infobox element/symbol-to-allotropes Mass number Cèṭa'an:Infobox element/symbol-to-most-stable-isotope Cèṭa'an:Infobox element/periodic table Atomic number (Z ) 120 Group Cèṭa'an:Infobox element/symbol-to-group Period Cèṭa'an:Infobox element/symbol-to-period Block Cèṭa'an:Infobox element/block format Electron configuration Cèṭa'an:Infobox element/symbol-to-electron-configuration Electrons per shell 2, 8, 18, 32, 32, 18, 8, 2 (predicted) Phase at STP solid (predicted) [ 1] [ 2] Melting point 953 K (680 °C, 1256 °F) (predicted) [ 1] Boiling point 1973 K (1700 °C, 3092 °F) (predicted) [ 3] Density (near r.t. ) 7 g/cm3 (predicted) [ 1] Heat of fusion 8.03–8.58 kJ/mol (extrapolated) [ 2] Oxidation states Cèṭa'an:Infobox element/symbol-to-oxidation-state Electronegativity Pauling scale: 0.91 (predicted) [ 4] [[Ionization energy|Cèṭa'an:Engvar energies]] 1st: 563.3 kJ/mol (predicted) [ 5] 2nd: 895–919 kJ/mol (extrapolated) [ 2] Atomic radius empirical: 200 pm (predicted) [ 1] Covalent radius 206–210 pm (extrapolated) [ 2] Cèṭa'an:Infobox element/spectral lines Natural occurrence Cèṭa'an:Infobox element/symbol-to-occurrence Crystal structure Cèṭa'an:Infobox element/crystal structure (extrapolated) [ 6] CAS Number 54143-58-7 Naming IUPAC systematic element name Symbol Cèṭa'an:Infobox element/symbol-to-symbol-etymology Experiments and theoretical calculations | references
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↑ Cèṭa'an:Cite journal This article gives the Mulliken electronegativity as 2.862, which has been converted to the Pauling scale via χP = 1.35χM 1/2 − 1.37.
↑ Pershina, Valeria. "Theoretical Chemistry of the Heaviest Elements". Dalam Schädel, Matthias; Shaughnessy, Dawn. The Chemistry of Superheavy Elements (edisi ke-2nd). Springer Science & Business Media. hlm. 154. ISBN 9783642374661 .
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