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Question

What are the different oxidation states of Bromine in the compound Br3O8?

A
All bromine atoms are present in +83 oxidation state
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B
2 Bromine atoms in +6 state and one in +4 state
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C
2 Bromine atoms in +4 state and one in +6 state
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D
2 Bromine atoms in +8 state and one in +4 state
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Solution

The correct option is B 2 Bromine atoms in +6 state and one in +4 state

There are two different types of bromine atoms:
1. That has 3 oxygen atoms attached to it (Two terminal bromines)
2. That has 2 oxygen atoms attached to it. (Bromine atom in middle)
Let oxidation state of Bromine atom that is attached to 3 oxygen atoms be x.
Thus:
x+(3×2)=0x=+6
Both the terminal Bromine atoms have +6 oxidation state.

Let oxidation state of Bromine atom which is attached to 2 oxygen atoms is y :
Then,
y+(2×(2))=0y=+4
So option b is correct.

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