Periodic Table

Seaborgium

Transition Metal

Quick Facts about Seaborgium

Db
  • solid- state of matter at room temperature
  • Radioactive- no stable isotopes exist
  • 6, 5, 4, 3, 0- common oxidation states in compounds
Bh

Seaborgium (Sg) is element 106 on the periodic table. Atomic mass of Sg: 269.0000 u. Sg is in period 7, group 6. Density of Sg: 35.00 g/cm³.

Why Seaborgium Matters

Seaborgium in everyday life and industry

In Your Home

  • No commercial applications
  • Research element for superheavy element studies
  • Helps test relativistic effects on chemistry
  • Only a few atoms made at a time

In Your Body

✗ Not essential

No biological role. Too short-lived for any studies.

Safety: Seaborgium is radioactive. Would presumably be toxic.

Discovery of Seaborgium

Discovered by Soviet Nuclear Research/ U. of Cal at Berkeley in USSR/United States, 1974

Name origin: Named in honor of Glenn Seaborg, American physical chemist known for research on transuranium elements.

History & Events

1974
Named after Glenn Seaborg
1974
Controversial - first element named after a living person
1994
Seaborg was still alive when named (1994)
1974
Seaborg discovered 10 elements himself

About Seaborgium

Half-life of 0.9 +/- 0.2 s. Discovered by the Joint Institute for Nuclear Research at Dubna (U.S.S.R.) in June of 1974. Its existence was confirmed by the Lawrence Berkeley Laboratory and Livermore National Laboratory in September of 1974.

Atomic Properties of Sg

Atomic Number of Sg
106
Atomic Mass of Sg
269.0000 u
Electron Configuration
[Rn] 5f14 6d4 7s2
Electronegativity
Block
d-block
Group
6
Period
7

Physical Properties of Sg

Phase (STP)
solid
Melting Point of Sg
Boiling Point of Sg
Density of Sg
35.0000 g/cm3

Atomic Radii

Covalent
143 pm

Common Misconceptions

Wrong:Naming elements after living people was common practice.
Correct:Seaborgium broke tradition—IUPAC initially refused to name it after Glenn Seaborg while he was alive.
Wrong:Many scientists have discovered more elements than Seaborg.
Correct:Glenn Seaborg holds the record for co-discovering 10 elements, unmatched by any other scientist.
Wrong:IUPAC immediately accepted 'seaborgium' as the name.
Correct:The naming controversy lasted years before IUPAC finally approved 'seaborgium' in 1997.

Isotopes of Seaborgium

Seaborgium has 0 naturally occurring isotopes, plus 1 notable radioactive isotope.

IsotopeAtomic Mass (u)AbundanceHalf-LifeDecay Mode
271106Sg (Sg-271)Seaborgium-271 isotope271.13393

Data source: NIH PubChem (aggregated from IUPAC, NIST)

Uses

It has no significant commercial applications.

Sources

Made by bombarding californium-249 with oxygen-18.

Geochemistry

Goldschmidt
synthetic

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