Steel is an alloy consisting of Fe with a small amount of C. Elemental Cr can be added to steel to make the steel less likely to rust; Cr atoms react with oxygen in the air to form a nonreactive layer of chromium oxide on the surface of the steel, preventing the oxidation of underlying Fe atoms. A sample of steel-chromium alloy contains 15 percent Cr by mass. Which of the following diagrams best shows a particle-level view of a surface section and an interior section of the alloy represented below at the left? The atomic radii of the atoms involved are given in the table below at the right.)

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Element Fe Cr C 0 Molar Mass Atomic Radius (g/mol) 55.85 52.00 12.01 16.00 (pm) 125 127 77 73 (A) (B) (D) Surface Fe Fe Fe Fe Fe Fe)(Fe)(Fe) Fe Fe Fe Fe Fe Fe Fe Fe Fe Fe Fe Interior Fe)(Cr FoFe Fe Fe Fe)(Fe) Fe Fe Cr Fel Fe FeFe) Fe Element Fe Cr C 0 Molar Mass Atomic Radius (g/mol) 55.85 52.00 12.01 16.00 (pm) 125 127 77 73 (A) (B) (D) Surface Fe Fe Fe Fe Fe Fe)(Fe)(Fe) Fe Fe Fe Fe Fe Fe Fe Fe Fe Fe Fe Interior Fe)(Cr FoFe Fe Fe Fe)(Fe) Fe Fe Cr Fel Fe FeFe) Fe

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Correct answer is Option B Option A C is rejected because t... View the full answer