Metals' Properties Enable Their Practical Uses

Steps:

• Statement 1: Metals are good conductors of electricity due to delocalized electrons, used in wiring.
• Statement 2: Metals are malleable and ductile, allowing forming into sheets and wires for construction.
• Statement 3: Metals form alloys to enhance strength and corrosion resistance, like steel in buildings.
• All statements align with metallic bonding properties, confirming correctness.

Why D is correct:

• Metallic bonds provide high conductivity, malleability, and alloying ability, as defined by electron sea model.

Why the others are wrong:

• A excludes 3, but alloying is a key metal use.
• B excludes 2, but malleability is essential for shaping metals.
• C excludes 1, but conductivity drives electrical applications.

Final answer: D