Symbol Rg. A radioactive transactinide element; a.n. 111. It was made by fusion of 209Bi with 64Ni. Only a few atoms have been detected.
A radioactive transactinide; a.n. 111. It was made by fusion of 209Bi with 64Ni. Only a few atoms have been detected.
https://www.webelements.com/roentgenium/ Information from the WebElements site
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