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0 votes
16.1k views
in Chemistry by (83.6k points)

What is the oxidation number of Br in KBrO4?

(a) +6

(b) +7

(c) +5

(d) +8

1 Answer

+1 vote
by (92.0k points)
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Best answer

Correct option  (b) +7

Explanation:

Let the oxidation no. of Br be x.

+1 + x + 4 (-2) =0, -7+ x = 0, x = +7

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