An unknown element crystallizes in a body-center cubic crystal structure. The atomic radius of the substance is 3.539
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Iron (Fe) has a density of 7.874 g/cm^3 and crystallizes in a body-centered cubic structure. What is the atomic radius of iron?
a. 99 pm
b. 114 pm
c. 124 pm
d. 143 pm
e. 256 pm