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Uranium

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slovenka3000:
Hi guys,
I would like to know how you would differentiate uranium from lead? And what does a number 156 on a metal mean?
Thanks for your response!

AWK:
There are many physical and chemical methods for the qualitative identification of elements and their compounds.

In the periodic tables, the meaning of individual numbers is usually explained.

Enthalpy:
Metallic U from Pb? Already the density tells it. The hardness too: Pb writes on paper.

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