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roentgenium

Primary Information
Secondary Information

Definition

Roentgenium is a chemical element with the symbol Rg and atomic number 111. It is a synthetic element, meaning it has never been found in nature. It was first created in 1994 by a team of scientists at the Joint Institute for Nuclear Research in Dubna, Russia.

Roentgenium is a very heavy element, with a mass about 200 times that of hydrogen. It is also very radioactive, meaning it decays quickly into other elements.

Roentgenium is named after Wilhelm Roentgen, the German physicist who discovered X-rays in 1895.

How can the word be used?

Roentgenium is a highly radioactive element, and it decays very quickly.

roentgenium

Different forms of the word

Noun:

  • a chemical element with the symbol Rg and atomic number 111. It is a synthetic element, meaning it has not been found in nature.

Etymology

The word "roentgenium" is named after Wilhelm Conrad Röntgen, the German physicist who discovered x-rays in 1895.

The word "roentgenium" is a portmanteau of the words "Röntgen" and "-ium", the suffix used for chemical elements.

The first recorded use of the word "roentgenium" was in 1994.

Question

What is roentgenium?