Metallic Bonding in Alloys

Steps:

• Recall that alloys are mixtures of metals or metals with non-metals, sharing metallic bonding properties.
• Identify the key feature of metallic bonding: attraction between positive metal ions and delocalized electrons.
• Evaluate options against alloy definitions: alloys aren't limited to copper, vary in properties like hardness, and lack fixed formulas.
• Confirm C matches the electron sea model, while others contradict facts.

Why C is correct:

• Alloys retain metallic bonding, where positive ions are held by a delocalized "sea of electrons," as per the metallic bond model.

Why the others are wrong:

• A: Alloys form from many metals, not just copper mixtures.
• B: High carbon steel is hard and brittle, not soft.
• D: Alloys are homogeneous mixtures without fixed chemical formulas.

Final answer: C