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Alkali metals are good conductors of heat and electricity because they 

Chemistry
WAEC 2025

Alkali metals are good conductors of heat and electricity because they 

  • A. contain delocalised electrons
  • B. are found in the d-block
  • C. have vibrating ions
  • D. are all metals
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Correct Answer: Option A
Explanation

Alkali metals (Group 1 elements) have a single valence electron in their outermost shell. In a metallic lattice, these valence electrons are weakly held by the nucleus and become delocalised, meaning they are free to move throughout the entire structure.


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