Dubnium is a very rare element. It is so rare that there is only a tiny amount of it in the whole world. Dubnium is made in laboratories, and it is not found in nature.
Dubnium is a synthetic element, which means that it does not occur naturally on Earth.
Noun: dubnium.
Adjective: dubnium.
Verb: to dubnium.
Adverb: dubniumly.
The word "dubnium" comes from the Russian city of Dubna, where the element was first synthesized in 1968. The name was officially adopted by the International Union of Pure and Applied Chemistry (IUPAC) in 1976.
What is dubnium?
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