Flerovium (Fl)
Unknown / predicted · p-block · period 7 · group 14
Possibly a volatile liquid or gas.
Flerovium (symbol Fl) is chemical element number 114, a unknown / predicted in group 14, period 7 of the periodic table. Its standard atomic weight is (289) and its electron configuration is [Rn] 5f14 6d10 7s2 7p2. Its state at room temperature is unknown, and it is radioactive. Named after the Flerov Laboratory and the physicist Georgy Flerov.
Properties
| Atomic number | 114 |
|---|---|
| Atomic mass | (289) |
| Category | Unknown / predicted |
| Block | p-block |
| Group · Period | 14 · 7 |
| Electron configuration | [Rn] 5f14 6d10 7s2 7p2 |
| Electrons per shell | 2, 8, 18, 32, 32, 18, 4 |
| State at 25 °C | unknown |
| Melting point | — |
| Boiling point | — |
| Density | — |
| Electronegativity (Pauling) | — |
| Radioactive | Yes — no stable isotope |
| Origin | synthetic |
| Discovered | 1999 · Dubna (Russia) |
Key facts about Flerovium
- Named after the Flerov Laboratory and the physicist Georgy Flerov.
- Once hoped to sit on an 'island of stability' of longer-lived superheavy elements.
- Some experiments hint it is unexpectedly volatile, more like a heavy noble gas than like lead.
- Most stable isotope lasts a couple of seconds.
What Flerovium is used for
None — research only.
Where it sits in the periodic table
Flerovium is in group 14, period 7, of the p-block. Its electron configuration [Rn] 5f14 6d10 7s2 7p2 means its outermost shell holds 4 electrons, which is what places it here and explains much of its chemistry. See Flerovium on the interactive table →
Flerovium — frequently asked questions
What is Flerovium used for?
None — research only.
Is Flerovium radioactive?
Yes. Flerovium has no stable isotope, so every form of it is radioactive.
What is the electron configuration of Flerovium?
Flerovium has the electron configuration [Rn] 5f14 6d10 7s2 7p2, which is 2, 8, 18, 32, 32, 18, 4 electrons per shell.
What group and period is Flerovium in?
Flerovium is in group 14, period 7, in the p-block. Its outer shell holds 4 electrons.
Who discovered Flerovium?
Flerovium was discovered in 1999 by Dubna (Russia).