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Find the oxidation number of: Cr in K(...

Find the oxidation number of:
Cr in `K_(2)Cr_(2)O_(7)`

A

`-6`

B

`+6`

C

`+2`

D

`-2`

Text Solution

Verified by Experts

The correct Answer is:
B
`2+2x+7(-2)=0`
`:. x = (12)/(2)=+6`.
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