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A disproportionating element must exist in at least how many states?
ANine
BThree
CSeven
DEight
Answer & Solution
Correct answer: B. Three
1. It starts in an intermediate state.
2. Both a higher and a lower state are formed.
3. It needs at least three oxidation states.
_Source: NCERT Class 11 Chemistry, Unit 7 'Redox Reactions'_
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