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protactinium

The correct spelling is protactinium.

How to pronounce protactinium

noun

IPA: /ˌpɹəʊ.tækˈtɪn.i.əm/

Say it like: Pro-tac-tin-ium

The correct spelling is protactinium. A chemical element (symbol Pa) with atomic number 91: a dense, silvery-gray actinide metal.

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Definition

noun

  1. 1.A chemical element (symbol Pa) with atomic number 91: a dense, silvery-gray actinide metal.

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