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r-ruslan [8.4K]
3 years ago
13

What element has 81 protons in the nuclei of its atoms?

Biology
1 answer:
DiKsa [7]3 years ago
4 0
Tl = thallium

look at the periodic table look for element number 81 on the periodic table and that's TI

It's mass number is 204.38
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