Periodic table › Flerovium
Flerovium — Fl
Post-transition Metal · Group 14 · Period 7
Open the 3D atom, orbital and crystal lab →1. Identity and classification
Soft, ductile, silvery-white metallic solid with relatively low melting point compared to d-block transition metals
- Name and symbol
- Flerovium (Flerovium) · Fl
- Atomic number
- 114
- Relative atomic weight / mass number
- [289]
- Group · period · block
- 14 · 7 · p
- Category
- Post-transition Metal
- State near room temperature
- Unknown
- Stable isotopes
- No stable isotopes
- CAS number
- 54085-16-4
Square brackets [A] indicate a representative isotope mass number, not an average atomic weight. Neutron counts differ between isotopes.
2. Atomic structure and electron configuration
- Protons · electrons in a neutral atom
- 114 · 114
- Neutrons in reference isotope
- 175 (289Fl)
- Full electron configuration
1s² 2s² 2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 4f¹⁴ 5s² 5p⁶ 5d¹⁰ 6s² 6p⁶ 5f¹⁴ 6d¹⁰ 7s² 7p²- Abbreviated configuration
[Rn]7s² 7p² 5f¹⁴ 6d¹⁰ (predicted)- Electrons per shell
- 2, 8, 18, 32, 32, 18, 4
- Listed oxidation states
- 6, 4,2, 1, 0
- Electronegativity
- Not established
- First ionization energy
- Not established · Not established
- Electron affinity
- Not established
- Covalent radius
- 143 pm
- van der Waals radius
- Not established
Configurations of superheavy elements may include theoretical predictions. Different definitions of atomic radius are not interchangeable.
3. Physical and thermal properties
- Density
- Not established
- Melting point
- Not established
- Boiling point
- Not established
- Crystal structure
- Unknown / Predicted
- Specific heat
- Not established
- Thermal conductivity
- Not established
- Enthalpy of fusion
- Not established
- Enthalpy of vaporization
- Not established
- Magnetic ordering
- Unknown
- Mohs hardness
- Not established
- Speed of sound
- Not established
Density and structure depend on temperature, pressure and allotrope. 25°C is a room-temperature reference, not STP. Unestablished values are not zero.
4. Chemical behavior and compounds
Bulk reactions are not established; experiments involve small numbers of radioactive atoms.
Selected compounds: FlO / Fl₂O₃ (Oxide) · FlClₙ (Chloride) · FlFₙ (Fluoride)
Reaction reference
Bulk reactions are not established; experiments involve small numbers of radioactive atoms.
Bulk reactions are not established; experiments involve small numbers of radioactive atoms.
5. Isotopes
| Isotope | Status | Natural abundance | Half-life |
|---|---|---|---|
| 289Fl | Radioactive | — | 2.4 s |
Half-life units: s seconds, m minutes, h hours, d days, Y years. A dash means no natural-abundance value is given, not zero. Listed records are selected ground states; metastable states are distinct.
6. Discovery and occurrence
- Discovery
- 1998 CE
- Scientists associated with discovery
- Joint Institute for Nuclear Research (JINR) & Lawrence Livermore National Lab
- Location
- Russia (Dubna) / USA
- Origin
- Synthetic
- Listed crustal abundance
- 0 ppm
Minerals and naming reference
Synthesized via hot fusion (²⁴⁴Pu + ⁴⁸Ca)
Named from scientific/historical roots associated with Flerovium (Fl), discovered or characterized by Joint Institute for Nuclear Research (JINR) & Lawrence Livermore National Lab.
7. Applications
Located near the predicted Z=114 'Island of Stability'; single-atom gas-solid chromatography shows weak metallic bonding and high volatility
Detailed applications by field
- everyday
- Located near the predicted Z=114 'Island of Stability'; single-atom gas-solid chromatography shows weak metallic bonding and high volatility
- industry
- Used in post-transition metal processing, specialized alloys, and chemical manufacturing (Located near the predicted Z=114 'Island of Stability'; single-atom gas-solid chromatography shows weak metallic bonding and high volatility).
- electronics
- Applied in electronic components, semiconductors, or functional coatings where Flerovium's electronic structure ([Rn] 5f¹⁴ 6d¹⁰ 7s² 7p²) provides target conductivity.
- medicine
- Restricted to controlled nuclear medicine or fundamental radiochemical research.
- energy
- Utilized in power generation, battery materials, catalysts, or nuclear technology involving Flerovium.
- aerospace
- High-performance materials, structural alloys, or space instrumentation utilizing Flerovium.
- agriculture
- Not used in agriculture due to radioactivity or heavy-metal toxicity.
- science
- Spectroscopic standard, crystallography, and quantum chemistry studies of Period 7 p-block elements.
8. Biological role and safety
Hazard depends on the isotope, chemical form, dose and exposure route.
Elemental substances, ions, compounds and radioisotopes can have different health effects. This is an educational reference; laboratory work requires the material safety data sheet and trained supervision.
Biological role reference
Classified as highly radioactive / synthetic in human and biological systems.