Seaborgium

Transition metal · atomic number 106

106269SgSeaborgiumSolidTransition metal

Seaborgium 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.

Properties of Seaborgium

Element category	Transition metal
Atomic number	106
Atomic mass	269 u
Phase at STP	Solid
Group	6
Period	7
Block	d
Electron configuration	*[Rn] 5f14 6d4 7s2
Electrons per shell	2, 8, 18, 32, 32, 12, 2
Density	35 g/cm3
Discovered by	Lawrence Berkeley National Laboratory

← Dubnium · Periodic table · Bohrium → Bh

About the transition metal group

The dense, strong, catalytic heart of the table — iron, copper, gold, titanium — responsible for most of metallurgy, jewellery and industry.

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8 elements: Superheavy synthetic elements made atom-by-atom, existing for fractions of a second; their true chemistry is still unmeasured.