Fl
Flerovium
Flerovium is a chemical element with the symbol Fl and atomic number 114. It has a mass number of 289, sits in period 7 and group 14, and is classified as a post-transition metal.
Properties
| Symbol | Fl |
|---|---|
| Atomic number | 114 |
| Mass number | 289 |
| Category | Post-transition metal |
| Group | 14 |
| Period | 7 |
| Electron configuration | [Rn] 5f14 6d10 7s2 7p2 |
| Outer-shell electrons | 4 |
The figure of 289 is a mass number rather than a measured atomic weight, because this element has no stable isotope.
Calculate with flerovium
- Molar mass of any formula containing it
- Electron configuration, including ions
- Effective nuclear charge by Slater's rules
- Average atomic mass from isotope abundances
Group 14
Atomic weights are the IUPAC 2021 standard values, abridged to the conventional five significant figures. Group, period, category and electron configuration are derived from the atomic number rather than stored, so they cannot drift out of step with it.