Flerovium,  ₁₁₄Fl

General properties
Pronunciation	/flɪˈroʊiəm/ ​(flə-ROH-vee-əm)
Mass number	289 (most stable isotope) (unconfirmed: 290)
Flerovium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon 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 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 (element) Thallium Lead Bismuth Polonium Astatine Radon 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 Pb ↑ Fl ↓ (Uho) nihonium ← flerovium → moscovium
Atomic number (Z)	114
Group	group 14 (carbon group)
Period	period 7
Block	p-block
Element category	unknown chemical properties, but probably a post-transition metal
Electron configuration	[Rn] 5f14 6d10 7s2 7p2 (predicted)
Electrons per shell	2, 8, 18, 32, 32, 18, 4 (predicted)
Physical properties
Phase at STP	Fl: Unknown phase (predicted)
Boiling point	~ 210 K ​(~ −60 °C, ​~ −80 °F)
Density when liquid (at m.p.)	14 g/cm3 (predicted)
Heat of vaporization	38 kJ/mol (predicted)
Atomic properties
Oxidation states	(0), (+1), (+2), (+4), (+6) (predicted)
Ionization energies	1st: 832.2 kJ/mol (predicted) 2nd: 1600 kJ/mol (predicted) 3rd: 3370 kJ/mol (predicted) (more)
Atomic radius	empirical: 180 pm (predicted)
Covalent radius	171–177 pm (extrapolated)
Other properties
Natural occurrence	Fl: Synthetic
Crystal structure	​face-centered cubic (fcc) (predicted)
CAS Number	54085-16-4
History
Naming	after Flerov Laboratory of Nuclear Reactions (itself named after Georgy Flyorov)
Discovery	Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL) (1999)
Main isotopes of flerovium
Iso­tope Abun­dance Half-life (1/2) Decay mode Pro­duct 284Fl syn 2.5 ms SF 285Fl syn 0.10 s α 281Cn 286Fl syn 0.12 s 40% α 282Cn 60% SF 287Fl syn 0.48 s α 283Cn EC? 287Nh 288Fl syn 0.66 s α 284Cn 289Fl syn 1.9 s α 285Cn 290Fl syn 19 s? EC 290Nh α 286Cn
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Flerovium is a synthetic chemical element also known as eka-lead. It has the symbol Fl and has the atomic number 114. It is a radioactive superheavy element.

Flerovium does not exist in nature. It is made from a nuclear reaction between plutonium and calcium. The reaction that happens is a fusion reaction.