The oxidation state of mo in its oxido-complex - complex species `[Mo_(2)O_(4)[C_(2)H_(4))_(2)(H_(2)O)]^(2-)` is

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The oxidation state of mo in its oxido-complex - complex species `[Mo_(2)O_(4)[C_(2)H_(4))_(2)(H_(2)O)]^(2-)` is A. `+2 ` B. `+3` C. `+4` D. `+5`

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