Seaborgium facts for kids

Quick facts for kids
Seaborgium, ₁₀₆Sg

Seaborgium
Pronunciation	i/siːˈbɔːrɡiəm/ ​(see-BOR-gee-əm)
Mass number	269
Seaborgium in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson W ↑ Sg ↓ (Uhn) dubnium ← seaborgium → bohrium
Atomic number (Z)	106
Group	group 6
Period	period 7
Block	d
Electron configuration	[Rn] 5f14 6d4 7s2
Electrons per shell	2, 8, 18, 32, 32, 12, 2
Physical properties
Phase at STP	solid (predicted)
Density (near r.t.)	35.0 g/cm3 (predicted)
Atomic properties
Oxidation states	0, (+3), (+4), (+5), +6 (parenthesized: prediction)
Ionization energies	1st: 757 kJ/mol 2nd: 1733 kJ/mol 3rd: 2484 kJ/mol (more) (all but first estimated)
Atomic radius	empirical: 132 pm (predicted)
Covalent radius	143 pm (estimated)
Other properties
Natural occurrence	synthetic
Crystal structure	​body-centered cubic (bcc) (predicted)
CAS Number	54038-81-2
History
Naming	after Glenn T. Seaborg
Discovery	Lawrence Berkeley National Laboratory (1974)
Main isotopes of seaborgium
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 265Sg syn 8.9 s α 261Rf 265mSg syn 16.2 s α 261mRf 267Sg syn 1.4 min 17% α 263Rf 83% SF 269Sg syn 14 min α 265Rf 271Sg syn 1.6 min 67% α 267Rf 33% SF

Seaborgium is a special kind of chemical element. It has the symbol Sg and its atomic number is 106. This means it has 106 protons in its center.

Seaborgium is a radioactive element. This means it gives off energy as it changes over time. It doesn't exist naturally on Earth. Scientists have to make it in a lab.

We don't know what Seaborgium looks like. This is because only tiny amounts have ever been made. Not enough to see with our eyes! But because it's in the same group as Tungsten on the Periodic Table, it might look similar to Tungsten.

What is Seaborgium?

Seaborgium is a transuranium element. This is a fancy way of saying it's an element that comes "after" Uranium on the Periodic Table. Uranium is element number 92, so any element with a higher atomic number is called transuranium.

How Scientists Predicted Seaborgium

Long ago, a scientist named Dmitri Mendeleev thought that an element like Seaborgium would exist. He was famous for creating the Periodic Table. He called this predicted element eka-tungsten. He gave it this name because he thought it would be very similar to Tungsten. Scientists have found that the way Seaborgium acts chemically is indeed a lot like Tungsten.

Naming Seaborgium

Glenn Seaborg helped discover many new elements.

This element is named after a famous American scientist, Glenn Seaborg. He was a very important person in the world of chemistry. He helped discover many new elements that don't exist in nature. Naming an element after him was a way to honor his amazing work.

Seaborgium's Short Life

The most stable type of Seaborgium is called ²⁷¹Sg. This number tells us how many protons and neutrons are in its center. This type of Seaborgium has a very short half-life of only 2.4 minutes. A half-life is the time it takes for half of a radioactive substance to change into something else. Because its half-life is so short, it's very hard to study Seaborgium.

Images for kids

• 

  Element 106 was named after Glenn T. Seaborg, a pioneer in the discovery of synthetic elements, with the name seaborgium (Sg).

• 

  An aged Seaborg pointing to the element named after him on the periodic table

See also

In Spanish: Seaborgio para niños