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A current of 2.0A passed for 5 hours thr...

A current of 2.0A passed for 5 hours through a molten metal salt deposits 22.2 g of metal (At. Wt. =177). The oxidation state of the metal in the metal salt is

A

`+1`

B

`+2`

C

`+3`

D

`+4`

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