S2.3 The metallic model

S2.3 The metallic model Quiz

IB Chemistry HL: Quiz

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5 questions, one answer each

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  1. 1. Which metal would be expected to have the weakest metallic bonding?

    • A. Beryllium
    • B. Magnesium
    • C. Lithium
    • D. Caesium

  2. 2. (HL) Why do the 3d electrons of titanium contribute to metallic bonding?

    • A. They are in the outermost main energy level
    • B. The 3d and 4s sublevels are close in energy
    • C. Titanium forms covalent bonds
    • D. 3d electrons are unpaired and so repel the nucleus

  3. 3. Which property is explained by layers of cations sliding past each other?

    • A. Electrical conductivity
    • B. Malleability
    • C. High melting point
    • D. Thermal conductivity

  4. 4. (HL) Which metal has the lowest melting point?

    • A. Iron
    • B. Vanadium
    • C. Zinc
    • D. Titanium

  5. 5. Li⁺ and Mg²⁺ have similar radii. What mainly explains magnesium's higher melting point?

    • A. Larger atomic mass
    • B. Higher ionic charge
    • C. Covalent character
    • D. Lower density

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