Final answer:
A mole of lead atoms and a mole of iron atoms both contain the same number of atoms, which is 6.022\u00d71023, according to Avogadro's number. The magnetic properties of the elements do not affect the quantity of atoms in a mole.
Step-by-step explanation:
The question is asking us to compare the number of atoms in a mole of lead to the number of atoms in a mole of iron. In chemistry, the term mole refers to a specific number of particles, mainly atoms or molecules. According to Avogadro's number, one mole of any element contains exactly 6.022\u00d71023 atoms, regardless of the element.
Therefore, a mole of lead atoms and a mole of iron atoms both contain the same number of atoms. The uniqueness of an element is determined by the number of protons in the nucleus, known as the atomic number. Lead and iron have different atomic numbers, but this does not affect the number of atoms in a mole of each element. Magnetic properties such as being ferromagnetic or diamagnetic are irrelevant to the number of atoms in a mole.