Flerovium (symbol Fl, atomic number 114) is a synthetic superheavy element named after the Flerov Laboratory. It is classified as a post-transition metal and sits in group 14, period 7 of the periodic table.
Overview
Flerovium is the chemical element with atomic number 114 and the symbol Fl. With a standard atomic weight of [289], it is a post-transition metal. In the periodic table it occupies group 14 and period 7, and under standard conditions it is normally a solid. Flerovium is a synthetic superheavy element named after the Flerov Laboratory.
Atomic structure
An atom of Flerovium has 114 protons in its nucleus and, when neutral, 114 electrons arranged in the configuration [Rn] 5f14 6d10 7s2 7p2. Flerovium has no stable isotope; the value [289] refers to the mass number of its most stable or most commonly produced isotope.
Discovery and place in the table
Flerovium was discovered in 1999 by Joint Institute for Nuclear Research. It follows Nihonium (Nh) and precedes Moscovium (Mc) in order of atomic number.
| Atomic number | 114 |
|---|---|
| Symbol | Fl |
| Atomic mass | [289] |
| Category | Post-transition metal |
| Group | 14 |
| Period | 7 |
| Electron configuration | [Rn] 5f14 6d10 7s2 7p2 |
| Phase at STP | Solid |
| Discovered | 1999 (Joint Institute for Nuclear Research) |