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Ununoctium

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Last updated date: 25th Apr 2024
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Ununoctium - Uses and Properties

A table of elements, in which they are displayed according to their atomic number, electron configuration, and chemical properties, is called the periodic table. Rows and columns present in the periodic table are called the Periods and groups respectively. There are seven periods in the periodic table. Metals are displayed on the left side, and Non-metals are displayed on the right side. There are 18 groups in the periodic table.

Chemical elements can be in the form of solid, liquid or gas. Till now, 118 chemical elements are identified, in which 94 elements are found naturally on the earth, and the remaining 24 elements are synthetic elements. Every element has its own properties and importance. Today, we will talk about such element whose name is Ununoctium.

Ununoctium - Ununoctium is a synthetic element which can’t be found freely on the earth. Ununoctium is an artificial element which is unstable. Currently, Ununoctium is the only synthetic element of group 18. Basically, Ununoctium belongs to the noble gas. Ununoctium is a temporary name which is taken from the Latin language whose meaning is one-one-eight. 


Ununoctium was the temporary name of this element. In the present, this element is known as Oganesson. This name is given to give the honor to the nuclear scientist Yuri Oganessian who played a very big role in the discovery of this element. Oganesson is the only element whose namesake is alive today

Till now, Ununoctium has the highest atomic number and highest atomic mass among the elements which are discovered. The atomic number of Ununoctium is 118, and the symbol of Ununoctium is Uuo. The Energy of First Ionisation of Ununctium is 839.4 kJ/mol.

Properties of Ununoctium element - The atomic mass of Ununoctium is 294g/mol. Ununoctium belongs to Halogen category. The atomic mass, Melting Point, Boiling Point, Crystal Structure, Density, and color of Ununoctium is unknown. There is no isotope of Ununoctium element.

History and Discovery of the Ununoctium Element - Ununoctium element was discovered on the 19 July 2002 by the scientists who are working at the joint institute for Nuclear Research in the Dubna and Russia along with the scientists from the United states of America, Department of Energy Lawrence Livermore National Laboratory. 

Ununoctium element is produced by bombarding atoms of californium-249 with ions of calcium-48. This process was done under some experienced Scientists. This process produced the ununoctium-294, an isotope with a half-life of about 0.89 milliseconds (0.00089 seconds), and three free neutrons. During the discovery of Ununoctium, the californium target was irradiated with a total of 1.6 x 1019 calcium ions. This complete process took over 1080 hours of time. This process gives three atoms of Ununoctium.

Uses of Ununoctium Element - There is no use of Ununoctium apart from basic science research. Ununoctium is harmful due to its radioactivity.

FAQs on Ununoctium

1. What is Ununoctium?

Ununoctium or Oganesson is a synthetic chemical element. It is not found freely on earth. Its atomic number is 118 and is denoted by Og. It was first synthesized in 2002 by a joint team of Russia and America at Joint Institute for Nuclear Research and Lawrence Livermore National Laboratory. It is a transactinide chemical element located in P block.


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2. What are physical properties of Ununoctium?

Physical properties of Ununoctium are:


  • Appearance : Metallic solid at STP

  • Boiling point : Its boiling point is 177+- 10˚C

  • Melting point : Its melting point is 52 +- 15˚C

  • Density : Its density is 7.2g/cm3


Ununoctium or Oganesson is a synthetic compound which is still under research. Only limited information about is available. It’s appearance and radius are not known correctly yet.

3. What are the uses of Ununoctium?

Currently there are no uses of Ununoctium or Oganesson known to be used in research. Researchers are still working on this compound. Ununoctium is predicted to have the same properties as elements present in the same group it belongs to. Such compounds are made artificially that is man made. It is not found freely on earth.

4. What are atomic properties of Ununoctium?

Atomic properties of Ununoctium or Oganesson are:


  • Atomic radius : Its radius is 152pm (picometer)

  • Covalent radius : 157pm

  • Oxidation state : It shows six oxidation states -1, 0, +1, +2, +4, +6

  • Ionisation energies : First ionisation energy 860kJ/mol, Second ionisation energy 1560kJ/mol


As this compound is still under research only limited information is available

5. What does ununoctium decay into?

Ununoctium is highly unstable due to its radioactivity. The most stable isotope of it is Ununoctium-294. Ununoctium-294 decays into Livermorium through alpha decay. It has half life of about 0.8milliseconds.  It has very unstable radioactive atomic nuclei and is predicted to be in a solid state as it has realistic effects.


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