Incorrect statement(s) is/are A. The oxidation state of \( \mathrm{Mn} \) in \( \mathrm{Mn}_{2} ...

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Incorrect statement(s) is/are
A. The oxidation state of \( \mathrm{Mn} \) in \( \mathrm{Mn}_{2} \mathrm{O}_{7} \) is +7
B. The oxidation state of \( \mathrm{Mn} \) in \( \mathrm{MnO}_{2} \) is +6
C. The oxidation state of \( \mathrm{Mn} \) in \( \mathrm{Mn}_{2} \mathrm{O}_{3} \) is +5
D. The oxidation state of \( \mathrm{Mn} \) in \( \mathrm{MnO} \) is +2
(1) A and \( B \)
(2) A, C and D
(3) Only A
(4) B and C
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