2K(s)+F2(g)→2K+F−(s) is a type of ______ reaction.
A
disproportionation
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B
combustion
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C
corrosion
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D
redox
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Solution
The correct option is D redox The oxidation number of K increases from 0 to +1 and the oxidation number of F2 decreases from 0 to -1. Hence, K is oxidized and F2 is reduced. Hence, it is a redox reaction.