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Why can atoms at the surface of an adsorbent attract adsorbates?
AThey are always liquid in state
BThey are heavier than inner atoms
CThey lack neighbours on one side
DThey carry a nuclear charge
Answer & Solution
Correct answer: C. They lack neighbours on one side
Surface atoms have unsatisfied bonding requirements because they lack neighbours on one side, so they bind adsorbates.
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