Question

steel is an alloy containing fe atoms and c atoms. which of the following diagrams best represents the particle - level structure of steel?

Explanation:

Step1: Recall alloy structure knowledge

Steel is an interstitial alloy where carbon (C) atoms, which are smaller, fit into the interstices of the iron (Fe) - atom lattice. Fe atoms form the main lattice structure and C atoms are in the holes between them.

Step2: Analyze each option

• Option A: Has C as large atoms and Fe as small atoms, which is incorrect as Fe atoms are larger than C atoms in steel structure.
• Option B: Shows smaller C atoms in the interstices of larger Fe - atom lattice, which is consistent with the structure of steel as an interstitial alloy.
• Option C: Just shows a random mixture of C and Fe atoms without the characteristic interstitial - alloy structure.
• Option D: Has an incorrect and confusing representation with multiple sizes of C atoms which is not in line with the real - world structure of steel.

Answer:

B.