Answer :
The statement, that describes the atoms of Iron is "4.215 × [tex]10^{23}[/tex] atoms."
What is an atom?
The fundamental building block of chemistry is the atom. It is the smallest ordinary matter unit that makes up a chemical element.
The number of atoms in a volume of any substance is given by No of atoms = N * (density) * volume / (Molecular Weight).
N is an Avogadro's number constant equal to 6.022 ×[tex]10^{23}[/tex] atoms/mole.
1 mole of Fe will be of 6.022 × [tex]10^{23}[/tex] atoms
Then,= 0.70 mol × 6.022 × [tex]10^{23}[/tex] atoms = 4.215 ×[tex]10^{23}[/tex] atoms
As a result, 0.70 mol of iron contains 4.215 × [tex]10^{23}[/tex] atoms.
Hence, the correct option is 4.215 × [tex]10^{23}[/tex]atoms.
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