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JEE Main Chemistry question

ChemistryThe s-Block ElementsJEE Main

Not in JEE Main or NEET syllabus

The total number of (non-radioactive) alkali metals that, when burnt with excess of , form a superoxide is .

Answer: 3

Solution

Among the non-radioactive alkali metals (Li, Na, K, Rb, Cs), only the heavier three — K, Rb and Cs — form superoxides,

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Question ID VK-138171