protoattinio

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protoattinio (Wikipedia approfondimento) m sing

  1. (chimica) elemento chimico solido, facente parte del gruppo dei lantanidi, avente numero atomico 91, peso atomico 209 e simbolo chimico Pa
pro | to | at | tì | nio

IPA: /protoatˈtinjo/

formato dal suffisso greco prótos, che viene prima, e da actinium, attinio

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