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Oxygen has -1 oxidation state in the compound
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a
Caro's acid
b
Marshall's acid
c
BaO2
d
K2O
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Correct option is A
(1, 2, 3)Caro's acid H2SO5 contains peroxide group.Marshall's acid H2S2O5 contains peroxo group. BaO2 is bariumperoxide.Above three contains peroxo group hence oxygen state of O is -1, whereas in K2O,O.S. is -2.Talk to our academic expert!
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