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Is Dubnium an element?

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Dubnium

Dubnium

Dubnium
dubnium, the chemical element with the symbol Db and atomic number 105, named after the town of Dubna in Russia, where it, first produced
wikipedia
periodic element

periodic element

periodic element
periodic element (a pure chemical substance consisting a single type of atom, distinguished by the number of protons in the atoms' nucleii)
wikipedia
Is dubnium, the chemical element with the symbol Db and atomic number 105 an instance of periodic element (a pure chemical substance consisting a single type of atom, distinguished by the number of protons in the atoms' nucleii)?
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External web pages (using standard web search):

Dubnium - Wikipedia, the free encyclopedia
Dubnium ( / ˈ d uː b n i ə m / DOOB-nee-əm is a chemical element with the symbol Db and atomic number 105, named after the town of Dubna in Russia, where it was first produced.
http://en.wikipedia.org/wiki/Dubnium
What is Dubnium?
What is Dubnium? Information and facts regarding the element Dubnium. Info about the element Dubnium includes the definition, classification, history, discovery, properties,use ...
http://www.periodic-table.org.uk/element-dubnium.htm
Facts about DUBNIUM ***
Info and Facts about the element Dubnium from the Periodic Table. Interesting Facts, information about Dubnium the element. Concise facts and info about Dubnium
http://www.facts-about.org.uk/science-element-dubnium.htm
It's Elemental - The Element Dubnium
The Element Dubnium - Basic Physical and Historical Information
http://education.jlab.org/itselemental/ele105.html
Dubnium | Periodic Table
Element Dubnium (Db), Group 5, Atomic Number 105, d-block, Mass 262.114. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
http://www.rsc.org/periodic-table/element/105/dubnium

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