Asked by Anonymous

The radius of a iron atom is 124 pm. How many iron atoms would have to be laid side by side to span a distance of 1.75 mm?
Answered by DrBob222
A radius of 124 pm means a diameter of 248 pm and that is 2.48E-7 mm.
So #atoms x (2.48E-7 mm/1 atom) = 1.75 mm
Solve for # atoms.
Answered by Bosra Yeasmin
655555
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