Which of the following compounds is both para | vedclass

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(C) To be paramagnetic,a compound must have at least one unpaired electron. To be colored,it typically requires $d-d$ transitions (for transition meta

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$VOSO_4$

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(C) To be paramagnetic,a compound must have at least one unpaired electron. To be colored,it typically requires $d-d$ transitions (for transition metal complexes) or charge transfer. $1$. $K_2Cr_2O_7$: $Cr$ is in $+6$ oxidation state $(d^0)$. It is diamagnetic and colored due to charge transfer. $2$. $(NH_4)_2[TiCl_6]$: $Ti$ is in $+4$ oxidation state $(d^0)$. It is diamagnetic and colorless. $3$. $VOSO_4$: $V$ is in $+4$ oxidation state $(3d^1)$. It has one unpaired electron,making it paramagnetic,and it exhibits $d-d$ transitions,making it colored. $4$. $K_3[Cu(CN)_4]$: $Cu$ is in $+1$ oxidation state $(3d^{10})$. It is diamagnetic and colorless. Therefore,$VOSO_4$ is both paramagnetic and colored.

Which of the following compounds is both paramagnetic and colored?

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