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What is the oxidation number of chromium in k2cr2o7? 1.  +12 2.  +2 3.  +3 4.  +6?

What is the oxidation number of chromium in k2cr2o7? 1.  +12 2.  +2 3.  +3 4.  +6?
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2 votes
What is the oxidation number of chromium in k2cr2o7?

1.



+12

2.



+2

3.



+3

4.



+6?

User Ali Hassan
by
7.4k points

1 Answer

4 votes
K₂Cr₂O₇

(+1*2) + (x*2) + (-2*7)

2 + 2x - 14 = 0
2x - 12 = 0

2x = 12

x = 12/2

x = +6...
User Rachvela
by
7.5k points
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