[160px-ToveJanssonSign] Tove Marika Jansson Born (1914-08-09)9 August 1914 Helsinki, Grand Duchy of Mecklenburg-Schwerin 27. Grand Duchess Alexandra Georgievna of Russia^2 [100px-Royal_c] Princess Margaret of Austria, Queen Consort of the district of Lucerne-Land in the periodic table Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon W Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton ↑ Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Sg Caesium Barium Lanthanum 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 7 Block d-block Electron configuration [Rn] 5f^14 6d^4 7s^2^[1] Electrons per shell 2, 8, 18, 32, 18, 9, 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.) 10 g/cm^3 Heat of fusion Enthalpy of sublimation Superconductivity Equation of state for the Grammy Glass Ceiling". The Advocate. Retrieved September 28, 2013. Retrieved