Evaluating properties of metals, alloys, and non-metals

Steps:

• Statement 1: Alloys are solid or liquid mixtures that include at least one metal as a primary component, per standard chemistry definitions.
• Statement 2: Metals conduct thermal and electrical energy well due to delocalized electrons allowing free movement.
• Statement 3: Solid non-metals, like sulfur or carbon, are brittle and shatter under stress, lacking malleability.
• Correct statements are 1 and 2, matching option B.

Why B is correct:

• It identifies 1 and 2 as true based on alloy composition rules and metallic bonding principles.

Why the others are wrong:

• A: Includes 3, but non-metals are brittle, not malleable.
• C: Includes 3, which contradicts non-metal brittleness.
• D: Omits 1, but alloys must contain metal by definition.

Final answer: B