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When Sn^(2+) changes to Sn^(4+) in a rea...

When `Sn^(2+)` changes to `Sn^(4+)` in a reaction,then `"_____________"`.

A

it is oxidation as, `Sn^(2+)` loses two electrons

B

it is oxidation as, `Sn^(2+)` gains two electrons

C

it is reduction as, `Sn^(2+)` loses two protons

D

it is a reduction as, `Sn^(2+)` gains two protons

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