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What Is Flerovium?

Flerovium (pronounced as flee-rove-ee-em) is a radioactive, synthetic metal with the symbol Fl [1]. Though the short half-lives of its five isotopes (mass numbers between 285 and 289) make it difficult to study, its chemical properties (as much could be observed) show it to behave as a metal and a noble gas.  That is why this element, along with Copernicium, has been categorized as a volatile metal. Fl belongs to the family of rare earth metals and shows less reactivity [2, 3, 4, 10].



Origin of its Name: It is named after the Russian physicist Georgy Flerov, the founder of the Joint Institute for Nuclear Research (JINR) where the element was discovered [1, 4].

Who Discovered it: It was discovered by Yuri Oganessian and Vladimir Utyonkov in 1998.

How was it Discovered

A team led by Oganessian and Utyonkov produced it for the first time at JINR in Dubna, Russia by bombarding plutonium with calcium. The reaction produced a single atom of flerovium-289, the most stable of its isotopes with a half-life of 2.1 seconds [1, 3].

Position of the Element on the Periodic Table [1]

Group 14
Period 7
Block p

Properties and Characteristics of Flerovium [1, 2, 3, 4, 5, 7, 9]

General Properties

Relative atomic mass/ atomic weight 289

Physical Properties

Color/appearance Silvery white or pale gray (estimated)
Odor Unknown
Melting point/freezing point Unknown
Boiling point Unknown
Density Unknown
State of matter at 200C (normal phase) Solid (estimated)
Hardness Unknown
Electrical conductivity Unknown

Magnetic Properties

Magnetic ordering Unknown
Magnetic susceptibility Unknown

Chemical Properties

Oxidation number Unknown
Oxidation states Unknown

Atomic Data of Flerovium [1, 3, 5, 6, 8]

Atomic number 114
Valence electrons 4
Quantum numbers
– n 7
– ℓ 1
 – m 0
– m s
Electron configuration (noble gas configuration) [Rn] 5f146d107s27p2
Crystal structure
Atomic structure
– Number of Electrons 114
– Number of Neutrons 175
– Number of Protons 114
Energy levels
– First Energy Level 2
– Second Energy Level 8
– Third Energy Level 18
– Fourth Energy Level 32
– Fifth Energy Level 32
– Sixth Energy Level 18
– Seventh Energy Level 4
Radius of atom
– Atomic Radius (Å) Unknown
– Covalent Radius (Å) 1.43
Electronegativity Unknown
Ionization energy



Flerovium Atomic Structure (Bohr Model)

Flerovium Uses

As the element does not exist naturally and synthesized in small amounts only at the laboratory, it is used for research purposes [3].

Is it Harmful [4]

Being highly radioactive, exposure to it over a long period of time might be dangerous.

Flerovium Image

Interesting Facts

  • It was called Ununquadium (Uuq) until IUPAC named it as flerovium in May, 2012 [4].
  • Less than 100 atoms of flerovium have been created to date [7].



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