Science General · Question

Which of the following is NOT a real element?

Answer

Vitrainium

The story behind the answer

Vitrainium is not a recognized chemical element on the periodic table; it’s not approved by IUPAC. The others are real: Praseodymium (Pr, 59) and Lutetium (Lu, 71) are rare-earth lanthanides, while Hassium (Hs, 108) is a synthetic superheavy element first made in 198

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