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Is promethium a synthetic element?

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They are technetium (at. no. 43), which was the first element to be synthesized, promethium (at. no. 61), astatine (at. no. 85), francium (at. no. 87), and the transuranium elements (at. no. 93 and beyond in the periodic table ).

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Get more facts and information about synthetic elements from The Columbia Encyclopedia, Sixth Edition at Encyclopedia.com.

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