Which of the following element show \( +7 \) oxidation state? (a) \( \mathrm{Cl} \) (b) Mn (c) \...

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Which of the following element show \( +7 \) oxidation state?
(a) \( \mathrm{Cl} \)
(b) Mn
(c) \( \mathrm{Np} \)
(d) All of these
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