How many atoms are in Fe?
Understand the Problem
The question is asking for the number of atoms in an iron (Fe) atom. The elemental symbol 'Fe' represents iron, which is a single atom. Therefore, the answer is one atom.
Answer
The atomic number of Fe is 26.
The atomic number of Fe (iron) is 26, which means there are 26 protons in one atom of Fe. To determine the number of atoms in a given mass of Fe, Avogadro's number and atomic mass must be used.
Answer for screen readers
The atomic number of Fe (iron) is 26, which means there are 26 protons in one atom of Fe. To determine the number of atoms in a given mass of Fe, Avogadro's number and atomic mass must be used.
More Information
The atomic number gives the number of protons in an atom and identifies the element. While Avogadro's number (6.022 x 10^23 atoms per mole) is used to calculate the number of atoms in a given mass.
Tips
A common mistake is confusing the atomic number (which indicates the number of protons) with the number of atoms, which requires knowing the mass and using Avogadro's number.
Sources
- How many atoms are in 500.0 grams of iron - web2.0calc.com
- How many atoms of iron (Fe) are present in 4.0 g of iron? - homework.study.com
- How many atoms are in Fe? - answers.com
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