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JEE Advanced levelNumerical answerDifficulty 3 of 3bn074

Tricarbon dioxide (carbon suboxide) has the formula deduced from its name, with O as $- 2$ . Find the average oxidation number of carbon in it. Give the answer to two decimals.

Numerical answer type, tolerance 0.01.

Answer: 1.33

Tricarbon dioxide is

C X_{3} O X_{2}

. Charge balance:

3 x + 2 (- 2) = 0

, so

x = 4/3

. The average oxidation number of C is

1.33

.

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