Flerovium

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, ₀₀Fl

Flerovium
Pronunciation	/fləˈroʊviəm/[1] (flə-ROH-vee-əm) /flɛˈroʊviəm/[2] (flerr-OH-vee-əm)
Mass number	[289] (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
Group	group 14 (carbon group)
Period	period 7
Block	p-block
Electron configuration	[Rn] 5f14 6d10 7s2 7p2 (predicted)[3] (predicted)
Electrons per shell	2, 8, 18, 32, 32, 18, 4 (predicted)
Physical properties
Phase at STP	gas (predicted)[3]
Boiling point	~ 210 K ​(~ −60 °C, ​~ −80 °F) [4][5]
Density when liquid (at m.p.)	14 g/cm3 (predicted)[6]
Heat of vaporization	38 kJ/mol (predicted)[6]
Atomic properties
Oxidation states	(0), (+1), (+2), (+4), (+6) (predicted)[3][7][8]
Ionization energies	1st: 832.2 kJ/mol (predicted)[9] 2nd: 1600 kJ/mol (predicted)[6] 3rd: 3370 kJ/mol (predicted)[6] (more)
Atomic radius	empirical: 180 pm (predicted)[3][6]
Covalent radius	171–177 pm (extrapolated)[10]
Other properties
Natural occurrence	synthetic
Crystal structure	​face-centered cubic (fcc) (predicted)[11]
CAS Number	54085-16-4
History
Naming	after Flerov Laboratory of Nuclear Reactions (itself named after Georgy Flyorov)[12]
Discovery	Joint Institute for Nuclear Research (JINR) and Lawrence Livermore National Laboratory (LLNL) (1999)
Isotopes of flerovium v e
Main isotopes Decay abun­dance half-life (t1/2) mode pro­duct 284Fl synth 2.5 ms[13][14] SF – 285Fl synth 100 ms[15] α 281Cn 286Fl synth 105 ms[16] α55% 282Cn SF45% – 287Fl synth 360 ms[16] α 283Cn ε?[17] 287Nh 288Fl synth 660 ms α 284Cn 289Fl synth 1.9 s α 285Cn 290Fl synth 19 s?[18][19] EC 290Nh α 286Cn
Category: Flerovium view talk edit | references

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.

Uses

It currently has no use at the moment as it is being researched right now.

History

The discovery of Flerovium in December 1998 was reported in January 1999 by scientists at the Joint Institute for Nuclear Research in Dubna, Russia.^[20] The same team of scientists made another isotope of Fl three months later^[21] and made it again in 2004 and 2006.

In 2004 in the Joint Institute for Nuclear Research checked it was made by another method. They found the final products of radioactive decay.

After its discovery, the "new" element was named ununquadium. The named changed on May 30th, 2012 to "flerovium". It was named for the Flerov Laboratory of Nuclear Reactions, which was named for Russian physicist Georgy Flyorov. The International Union of Pure and Applied Chemistry named it so.^[22]

Chemical properties

Not enough Flerovium has been made to measure its physical or chemical properties. It is thought that it would be a soft, dense metal that changes colour in air. It may have a low melting point of about 200 °C.

Making it

Flerovium can be made by bombarding a plutonium-244 target with calcium-48 as a beam of ions.

298Fl - An undiscovered neutron-rich nucleus

According to the nuclear shell model, the undiscovered neutron-rich nucleus ²⁹⁸Fl may be a doubly magic nucleus, atop the shell closure at N=184.^[23] It is predicted that this atom, amid the closed nuclear shells, expected to have longer half-lives for alpha decay and spontaneous fission. However using the fusion-evaporation method to produce this nuclide is impractical, since more neutron-rich starting materials with low proton numbers are unstable due to beta decay.

Estimates for half-lives for this atom range from a few minutes to several billion years. ^[source?]