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julsineya [31]
3 years ago
10

Xam

Biology
1 answer:
natka813 [3]3 years ago
8 0

Answer:

Pb has an atomic mass of 82. If an atom of that element has an atomic mass of 80, that atom is known as: an isotope.

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the scientific method is used by scientists to explain a certain natural phenomenon, and it involves the formation of a ______ a
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