Dubnium

Dubnium

Symbol	Db
Atomic Number	105
Atomic Mass	268 g.mol -1
Discovered by	Scientists at both Berkeley, California, USA, and Dubna, near Moscow, Russia between 1968-1970

Chemical Properties of Dubnium

What is Dubnium?

• Dubnium is a chemical element discovered by Albert Ghiorso in the year 1970. It has an atomic number of 105 with symbol Db, and it belongs to the 7th period of the 5th group of the periodic table.

Uses of Dubnium

• Since Dubnium is not produced in high amounts and it does not exist even on the earth’s crust. Hence there are no such practical applications of this metal apart from the research areas.
• The metal has not also proved any harmful effects on health and the environment since it tends to decompose within a short period.

Properties of Dubnium

• The metal behaves as a solid at temperatures of 20o °C. It occurs as a synthetic element in nature, and it is artificially produced by the bombardment of the californium-249 with the nuclei nitrogen-1.
• Dubnium is a highly radioactive element with only one single stable isotope dubnium-268 which has a half-life measuring about only 32 hours and gets decayed through the process of spontaneous fission. The other isotopes are synthetic in nature and have mass numbers ranging from 256 to 270.
• The metal is produced in small amounts artificially. The bombardment of it can make many isotopes of it with the Heavy Ion Linear Accelerator.