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Question

Find the oxidation number of V in Rb4Na[HV10O28].

A
5
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B
2
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C
-5
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D
none of these
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Solution

The correct option is A 5
Let oxidation state of V is x in Rb4Na[HV10O23]
H(1)+1+1+10x2(28)=0
6+10x56=0
10x=50
x=+5

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