to find out how many atoms are in a sample of bismuth, you would typically use avogadro’s number, which is approximately \(6.022 \times 10^{23}\) atoms per mole.
bismuth’s atomic number is 83, meaning it has 83 protons in its nucleus. this is also the number of atoms in one mole of bismuth (6.022 × 10^23 atoms).
so, if you have \(x\) moles of bismuth, you would have \(x \times 6.022 \times 10^{23}\) atoms.
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