Identify correct statements from below:A. The | vedclass

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(D) . The chromate ion $(CrO_4^{2-})$ is tetrahedral,not square planar.$B$. Dichromates are prepared from chromates by adding acid $(2CrO_4^{2-} + 2H^

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$B, D, E$ only

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(D) . The chromate ion $(CrO_4^{2-})$ is tetrahedral,not square planar.$B$. Dichromates are prepared from chromates by adding acid $(2CrO_4^{2-} + 2H^{+} \rightarrow Cr_2O_7^{2-} + H_2O)$. This statement is correct.$C$. The green manganate ion $(MnO_4^{2-})$ has $1$ unpaired electron ($d^1$ configuration),making it paramagnetic,not diamagnetic.$D$. $K_2MnO_4$ disproportionates in neutral or acidic solution to give permanganate $(MnO_4^-)$ and manganese dioxide $(MnO_2)$. This statement is correct.$E$. As the oxidation number of the transition metal increases,the ionic character of the oxides decreases (covalent character increases). This statement is correct.Therefore,statements $B, D,$ and $E$ are correct.

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