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  • Find the oxidation number of the  atom in <img alt="\mathrm{CrO_4^{2-}}" src="https:/

Find the oxidation number of the \mathrm{Cr} atom in \mathrm{CrO_4^{2-}}

Option: 1

2


Option: 2

6


Option: 3

0


Option: 4

1


Answers (1)

best_answer

Let the oxidation number of \mathrm{Cr} in \mathrm{CrO_4^{2-}} be x

Charge balance on the ion gives us 

x+4 \times (-2)=-2

x=6

Posted by

Anam Khan

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