An oxidation state of Cr in K2Cr2O7?

By: |Published on: Sep 16|Categories: Chemistry JAMB| 0 comments

A. 7
B. 6
C. 5
D. 4

Correct Answer:

Option B – 6

Explanation

The oxidation state of K2Cr2O7 is +6.

+2+2x+(−2×7)=0

2x=12

x=+6

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