The sum of the coefficients in the balanced equation of $C o + N i^{2 +} \to C o^{3 +} + N i$ , is:

5

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2

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3

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10

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13

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Solution

The correct option is B $10$
$2 C o + 3 N i^{2 +} \to 2 C o^{3 +} + 3 N i$
This is balanced chemical equation.
The sum of the coefficients in the balanced equation $= 2 + 3 + 2 + 3 = 10$

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