element.nameElectron Panel Modal created by GPPT Lab100Atom NumberFmSymbolFermiumNameActinideCategory3.0GroupSolidPhaseDiscovered ByLawrence Berkeley National Laboratory1952Year257.095uAtomic Mass0.000kJ/molMolar Heat0.00Atomic Radius3.0Groupg/cm3-0.001Density7.0Period0.000°KBoil1800.000°KMelt
Electrons>element.nameElectron shell created by GPPT Lab contact@gppt.tnFm100
Protons and Neutronselement.nameElectron shell created by GPPT Lab contact@gppt.tn100 neutron100 Proton
Fermium is a synthetic element with symbol Fm and atomic number 100. It is a member of the actinide series. It is the heaviest element that can be formed by neutron bombardment of lighter elements, and hence the last element that can be prepared in macroscopic quantities, although pure fermium metal has not yet been prepared.