Copper is a divalent metal. The value of its electrochemical equivalent is $3.29 \times 10^{- 4} g$ . Its atomic mass is.

31.72

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63.5

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126.9

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15.87

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Solution

The correct option is B $63.5$ g
Electrochemical equivalent, $Z = \frac{E}{96500}$
or $3.29 \times 10^{- 4} = \frac{E}{96500}$
$∴ E = 31.74$
Atomic mass $= 2 \times E$ $[∵$ Cu is divalent $.]$
$= 2 \times 31.74 = 63.49$ g

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