WAEC Chemistry 2025 Objective — Question 39
Question 39 of 50 from the West African Examinations Council (WAEC) Chemistry 2025 Objective paper, with the correct answer and a full explanation.
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The lustre of a metal is due to its
- A. high density
- B. refractive density
- C. chemical inertness
- D. free electronsCorrect
Explanation
The lustre of metals (their shiny appearance) is due to the free electrons in the metallic bond. These electrons can absorb and re-emit light, giving metals their characteristic shine.
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