The Element Dubnium

What is Dubnium? Element Properties & Periodic Table Info

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Definition of the Dubnium Element
An artificially produced radioactive element whose most long-lived isotopes have mass numbers of 258, 261, 262, and 263 with half-lives of 4.2, 1.8. 34, and 30 seconds, respectively.

As Dubnium is so unstable, any amount formed would decompose to other elements so quickly that there’s no reason to study its effects on human health. The Atomic Number of this element is 105 and the Element Symbol is Db.

 

Origin / Meaning of the name Dubnium
The name Dubnium originates from its place of origin in Dubna, in Russia where it was was first synthesized at the Joint Nuclear Research Institute in 1964

Periodic Table Group and Classification of the of the Dubnium Element
Elements can be classified based on their physical states (States of Matter) e.g. gas, solid or liquid. This element is a solid. Dubnium
is classified as a "Transition Metal" which are located in Groups 3 - 12 of the Periodic Table. Elements classified as Transition Metals are generally described as ductile, malleable, and able to conduct electricity and heat.Nearly 75% of all the elements in the Periodic Table are classified as metals which are detailed in the List of Metals.

Facts about the History and the Discovery of the Dubnium Element
Dubnium was first synthesized at the Joint Nuclear Research Institute at Dubna, in Russia, in 1964 - leading to the name Dubnium (Db).
Also known as Rutherfordium which was synthesized by Albert Ghiorso in 1969 at the University of California and named in honor of Ernest Rutherford, a New Zealand chemist and physicist.
Also named as Kurchatovium (Ku) in honor of Igor Vasilevich Kurchatov (1903-1960) the former Head of Soviet Nuclear Research
IUPAC - the International Union of Pure and Applied Chemistry adopted Unnilpentium (Unp) as a temporary name
Also known as Joliotium (Jl) and Hahnium (Ha) after the  German scientist Otto Hahn

History of the Periodic Table
Check out the brief History of the Periodic Table which details dates and the names of famous scientists and chemists who contributed to the development of the Periodic Table.

Occurrence of the Dubnium Element
Man-made

Abundances of the element in different environments
%
in Universe N/A
% in Sun None
% in Meteorites None
% in Earth's Crust None
% in Oceans None
% in Humans None

Associated Uses of Dubnium
No known uses

Db

The Properties of the Dubnium Element
Symbol of Element : Db
Atomic Number : 105
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons : 105
Number of Neutrons : 157
Crystal Structure: Unknown
Density @ Unknown
Color : Unknown

The Properties of the Dubnium Element
Name of Element : Dubnium
Symbol of Element : Db
Atomic Number of Dubnium : 105
Atomic Mass: (262.0) amu
Melting Point: Unknown
Boiling Point: Unknown
Number of Protons/Electrons in Dubnium : 105
Number of Neutrons in Dubnium : 157
Crystal Structure: Unknown
Density @ Unknown
Color of Dubnium : Unknown

Dubnium as on the Periodic Table
Check out Dubnium on the Periodic Table which arranges each chemical element according to its atomic number, as based on the
Periodic Law, so that chemical elements with similar properties are in the same column. Our Periodic Table is simple to use - just click on the symbol for Dubnium as on the Periodic Table for additional information and for an instant comparison of the Atomic Weight, Melting Point, Boiling Point and Mass - G/cc with any other element. An invaluable source of facts and information as a Chemistry reference guide.

What is Dubnium - IUPAC and the Modern Standardised Periodic Table
The Standardised Periodic Table in use today was agreed by the International Union of Pure Applied Chemistry, IUPAC, in 1985 and now recognises more periods and elements than Dimitri  Mendeleev knew in his day in his day but still all fitting into his concept of  the "Periodic Table" in which Dubnium is just one element that can be found.

Learn about what is Dubnium with these fast facts...
These articles contain facts and information relating to Dubnium and each of the other elements including the Periodic Symbol,  group, classification, properties and atomic number which is often referred to as the Periodic Table Number. Test your knowledge of chemistry and the Periodic Table by completing the Element Symbols and Atomic Numbers on our Blank Periodic Table. Chemistry students will also find a helpful section on Chemical Formulas.

What is the Element Dubnium

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