7.
Calculate oxidation number of chromium in
a) K2CR2O7
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Explanation:
So, the total charge of potassium ions is +1⋅2=+2 , while oxygen ions is −2⋅7=−14 . Let x be the oxidation number of two chromiums. So, two chromium atoms have an oxidation number of +12 , and so one chromium atom will have anoxidation number of +122=+6 .
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Answer: oxidation number of chromium in pottasium dichromate is +6
Explanation:
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