Chromium forms most stable compound in the following oxidation state : (A) \( \mathrm{Cr} \) (I)...

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Chromium forms most stable compound in the following oxidation state :
(A) \( \mathrm{Cr} \) (I)
(B) \( \mathrm{Cr} \) (II)
(C) \( \mathrm{Cr} \) (III)
(D) \( \mathrm{Cr} \) (iv)
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