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Q.

From given compounds how many have tetrahedral shape, not ${sp}^{3}$ hybridised and coloured w.r.t. underlined atoms.
${MnO}_{4}^{-}, {Cr}_{2} O_{7}^{2 -}, {VO}_{4}^{3 -}, [Fe (H_{2} O_{5} {NO}^{+ 2}, {CrO}_{2} {Cl}_{2}$

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answer is 4.

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Detailed Solution

${MnO}_{4}^{-}, {Cr}_{2} O_{7}^{2 -}, {VO}_{4}^{2 -}, {CrO}_{2} {Cl}_{2}$ are $d^{3} 8$ and tetrahedral

Hence correct option is 0004.

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