Metallic Bonding Structure Error

Steps:

• Recall metallic bonding model: lattice of positive metal ions in a "sea" of delocalized electrons.
• Analyze statement 1: incorrectly describes negative ions instead of positive ions, violating the model.
• Evaluate statement 2: correctly links electrical conductivity to electron mobility, as electrons carry charge freely.
• Conclude option match: statement 1 false, statement 2 true, selecting D.

Why D is correct:

• Metallic bonding definition requires positive cations (from metal atoms losing valence electrons) in delocalized electron sea, making statement 1's "negative ions" inaccurate.

Why the others are wrong:

• A: Fails as statement 1 is incorrect, so cannot explain statement 2.
• B: Fails as statement 1 is incorrect, preventing both from being correct.
• C: Fails as statement 2 is correct per electron mobility in conductors.

Final answer: D