sciencefairadventure
106 Sg (263)

Seaborgium

Transition metal
Symbol Sg
Atomic Number 106
Atomic Weight (263)
CAS Registry ID 54038-81-2
Group Name (none)
Period Number 7
Block d-block
State at STP Solid

Description

Sample of Seaborgium โŒ• Enlarge Image

Seaborgium is a synthetic element that is a transition metal. It is predicted to be a silver or grey color in its predicted solid state. It has an atomic weight of 263, and the melting points and boiling points of this element are not yet known. The chemical characteristics of seaborgium are predicted to be similar to that of tungsten, though not much else is known about this element. No commercial uses, or any predicted commercial uses, of seaborgium exist at this time.

Isolation

Seaborgium does not exist in nature in any type of form. This element can only be synthesized in very minute quantities using specialized equipment and procedures.

Seaborgium โŒ• Enlarge Image

Seaborgium has been synthesized only a few times in its brief history. The isotopes of this element decay rapidly once they are synthesized, and so chemical studies and research on this element are not possible at this time. Seaborgium has been produced using two different methods. The first process was conducted using the element californium and oxygen. In this procedure, the isotope 249 of californium was fused with oxygen; this synthesis took place in a nuclear reactor. The products yielded an isotope, number 106, of seaborgium and 4 neutrons. The second isolation process involved bombarding neon atoms with an isotope, number 248, of californium. The reaction produced an isotope, number 266, of seaborgium and 4 neutrons. While the isotopes of seaborgium that are produced have been isolated, the quantities are so tiny that many of the chemical traits of seaborgium remain unknown. The most stable isotopic form of seaborgium, number 271, has a half life of only 2.4 minutes.

General

NameSeaborgium
SymbolSg
Number106
Chemical seriesTransition metal
Group6
Period7
Blockd
Appearanceunknown
Standard atomic weight(263) gยทmolโปยน
Electron configurationunknown
Electrons per shell2, 8, 18, 32, 32, 12, 2

Atomic Properties

Crystal structurecubic body centered
Oxidation states6, 5, 4, 3, 2, 1, โˆ’1 (mildly acidic oxide)
Electronegativity
Ionization energies
Atomic radius
Atomic radius (calc.)132 โ€‰pm
Covalent radius63 (calc.)โ€‰pm
Van der Waals radius

Physical Properties

Phasepresumed solid
Density (near r.t.)35 (est.) โ€‰gยทcmโˆ’3
Liquid density at m.p.
Melting point
Boiling point
Critical point
Heat of fusion
Heat of vaporization
Heat capacity

Miscellaneous

Magnetic ordering
Electrical resistivity
Thermal conductivity
Thermal expansion
Speed of sound (thin rod)
Young's modulus
Shear modulus
Bulk modulus
Poisson ratio
Mohs hardness
Vickers hardness
Brinell hardness