The oxidation state of chromium in chromium trioxide is?

+ 3

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+ 4

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+ 5

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+ 6

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Solution

The correct option is D $+ 6$
Let the oxidation state of Chromium be $x$ . Oxidation state of oxygen is -2
Therefore, $1 \times (x) + 3 \times (- 2) = 0 ⟹ x - 6 = 0 ⟹ x = + 6$
Hence, Option D is the correct answer.

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