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Flerovium

Element 114 · Post-transition metal

Specimen

Atomic number
114
Atomic mass
[290]
State at room temperature
Unknown
Melting point
Unknown
Boiling point
Unknown
Density
Unknown
Discovered
1998

Mass number of the longest-lived isotope, from IUPAC.1 Other physical data from PubChem.2

Can I eat it?

In food and water
Never made in amounts you could eat. Only a few atoms of flerovium have been seen. 3

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The atom

Fl
ShellElectrons
1 (K) 2
2 (L) 8
3 (M) 18
4 (N) 32
5 (O) 32
6 (P) 18
7 (Q) outermost 4
Total114

Configuration [Rn] 5f¹⁴ 6d¹⁰ 7s² 7p²

5f ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓
6d ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓ ↑ ↓
7s ↑ ↓
7p ↑ ↑
A shell diagram: each ring is an electron shell and each dot is one electron. The nucleus holds 114 protons. The outermost shell is shown in red. Electrons do not travel on rings: they fill orbitals, regions where an electron is likely to be found. The boxes are those orbitals for the electrons outside the Rn core, with one arrow per electron. This configuration is a prediction; it has not been measured.

Related elements

Group 14
C Carbon Si Silicon Ge Germanium Sn Tin Pb Lead

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Sources

  1. 1

    IUPAC Commission on Isotopic Abundances and Atomic Weights (CIAAW), 2024. Radioactive Elements .

    Mass number and half-life of the longest-lived isotope of the 34 elements with no standard atomic weight.

  2. 2

    National Center for Biotechnology Information (PubChem), 2026. Periodic Table of Elements .

    Electron configuration, melting and boiling points, density and discovery year for all 118 elements.

  3. 3

    Los Alamos National Laboratory, Periodic Table of Elements, 2026. Flerovium .

    • Because so few atoms have been observed, the chemical and physical properties of flerovium remain largely unknown.