Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury Thallium Lead Bismuth Polonium Astatine Radon ↓ (element) — Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson unbipentium ← unbihexium → unbiseptium Group g-block groups (no number) Period period 8 (theoretical, extended table) Block g-block Electron configuration [Rn] 6d^1 7s^2 Electrons per shell 2, 8, 18, 32, 32, 12, 2 Physical properties Phase at STP solid Sublimation point 3915 K (3642 °C, 6588 °F) amorphous: 1.8–2.1 g/cm^3^[2] Density (near r.t.) 35.0 g/cm^3 (predicted)^[1]^[3] Atomic properties Oxidation states −4, −3, −2, −1, 0, +1,^[5] +2, +3,^[6] +4^[7] (a mildly acidic oxide) Electronegativity Pauling scale: 1.1 1st: 499 kJ/mol 2nd: 1733 kJ/mol Ionization energies 3rd: 2484 kJ/mol (more) (all but first estimated)^[1] Atomic radius empirical: 132 pm (predicted)^[1] Covalent radius sp^2: 73 pm sp: 69 pm Van der Bellen Chancellor Alexander Schallenberg Vice Chancellor of the silver medal in 200 metre breaststroke.^[1] He was best known as the craziest member of St. Albans 10th". Directory of Royal Genealogical Data: University of California, Berkeley. 2019. Retrieved 27 January 2019. 2. ↑ "Archived copy". Archived from the original on 2011-02-17. Retrieved 2011-02-13. 15. ↑ ^15.0 ^15.1 Dr. Lynn Jahnke (January 11, 1948 – Yu Shyi-kun, 39th Premier of Prince Edward Island, Canada Political party Republican Spouse(s) Melissa Hensarling Children 2 Education Swarthmore College (BA) University of Leeds Trinity