Element

Bohrium Element Properties and Information

Published August 20, 2022 · Updated August 28, 2022

Bohrium Element Properties and Information

Bohrium is 107^th element on the periodic table. Elements are arranged in the periodic table on the basis of the atomic number. Atomic number is the number of protons in the nucleus of the atom. Bohrium has an atomic number of 107. It is located in the Group 7 and Period 7 of the periodic table of elements and denoted by the symbol ‘Bh’. Bohrium is named after Niels Bohr, who was a prominent atomic physicist.

Bohrium was discovered in 1975 by a team led by Yuri Oganessian at Joint Institute of Nuclear Research (JNIR); the bombarded bismuth with chromium and produced isotope-261 of element-107. A team led by Peter Armbruster and Gottfried Münzenberg at the Geselleschaft für Schwerionenforschung (GSI) produced an atom of isotope-262 of element-107; it was they who gave the name ‘Bohrium’ to element-107. Bohrium does not occur naturally in Earth’s crust; it can only be prepared in a synthetic manner in particle accelerators. It cannot even be prepared in a nuclear reactor. All the isotopes of bohrium which have been characterized so far have been obtained synthetically.

Physical Properties

Bohrium is a highly radioactive element with all isotopes having very short half-lives.
The atomic mass of bohrium is 262.
The melting point of bohrium is unknown as of yet.
The boiling point of bohrium is unknown as of yet.
The density of bohrium is unknown as of yet.
Bohrium has not been studied well because it decays very quickly.
Bohrium is expected to be a solid at room temperature.
Bohrium is expected to assume a hexagonal close-packed structure.

The longest lived bohrium isotope, bohrium-270, has a half-life of 61 seconds.

Chemical Properties

Bohrium properties which have been studied are related to singular-chemistry only. Most of the properties have only been determined theoretically.
Most stable bohrium compounds are expected to display an oxidation state of ‘+7’.
Bohrium compounds are also expected to display lower oxidation states but at the same time, they are predicted to be less stable.

Bohrium is observed to form variety of oxides and oxychlorides.

Methods of Production

Particle Accelerators: All the elements which have atomic number greater than 100 can only be prepared through reactions in a particle accelerator such as a cyclotron; they are not formed in a nuclear reactor. Bismuth-209 bombarded with chromium-54 yields bohrium-262.