Flerovium

Koushik 26/06/2026 19:58:09 Updated 26/06/2026 19:58:09

Property	Value
Atomic Number	114
Element	Flerovium
Symbol	Fl
Atomic Mass	[289] (most stable isotope)
Number of Neutrons	175 (Flerovium-289)
Number of Protons	114
Number of Electrons	114
Period	7
Group	14
Phase	Solid (predicted)
Radioactive	Yes
Natural	No (synthetic element)
Metal	Yes (predicted)
Nonmetal	No
Metalloid	No
Type	Post-transition Metal
Atomic Radius	— (not well established)
Electronegativity	— (not well established)
First Ionization Energy	~8.5 eV (estimated)
Density	~14 g/cm³ (estimated)
Melting Point	~340 °C (estimated)
Boiling Point	~420 °C (estimated)
Number of Isotopes	No stable isotopes (Fl-289 most notable)
Discoverer	Joint Institute for Nuclear Research (Dubna) and Lawrence Livermore National Laboratory
Year	1998
Specific Heat	— (not well established)
Number of Shells	7
Number of Valence Electrons	4