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Arrange the following in the increasing order of oxidation state of \( \mathrm{Mn} \)
(i) \( \mathrm{Mn}^{2+} \)
(ii) \( \mathrm{MnO}_{2} \)
(iii) \( \mathrm{KMnO}_{4} \)
(iv) \( \mathrm{K}_{2} \mathrm{MnO}_{4} \)
(1) (i) \( > \) (ii) \( > \) (iii) \( > \) (iv)
(2) (i) \( < \) (ii) \( < \) (iv) \( < \) (iii)
(3) (ii) \( < \) (iii) \( < \) (i) \( < \) (iv)
(4) (iii) \( < \) (i) \( < \) (iv) \( < \) (ii)
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