Since copper and zinc atoms have the same atomic radius, an alloy of copper and Zinc will have the structure shown in option B.
An alloy is a combination of two or more metals Alloys are known to have better tensile strength and higher resistence to corrosion.
We are told that both copper atoms and zinc atoms have the same atomic radius, 135 picometers. It then follows that an alloy of copper and Zinc will have the structure shown in option B.
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