← Periodic Table
106Sg269.000
Seaborgium
Transition MetalSeaborgium is a synthetic element with symbol Sg and atomic number 106. Its most stable isotope 271Sg has a half-life of 1.9 minutes. A more recently discovered isotope 269Sg has a potentially slightly longer half-life (ca.
Phase: Solid
2, 8, 18, 32, 32, 12, 2
Physical Properties
Atomic Mass269 u
Density35 g/cm³
Period7
PhaseSolid
Chemical Properties
Electron Configuration1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f14 5d10 6p6 7s2 5f14 6d4
Semantic Config*[Rn] 5f14 6d4 7s2
Shells2, 8, 18, 32, 32, 12, 2
Discovery
Discovered byLawrence Berkeley National Laboratory