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Among the alkali metals, the most powerful reducing agent is:

ASodium
BPotassium
CCaesium
DLithium
Answer & Solution
Correct answer: D. Lithium
1. All alkali metals are strong reducing agents. 2. Their power is ranked within the group. 3. Lithium is the most and sodium the least powerful. _Source: syllabus Chemistry Part II, Unit 10, The s-Block Elements._
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