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| List-$I$ (Coordination compounds) | List-$II$ (Number of unpaired electrons) |
| $A$. $[Cr(CN)_6]^{3-}$ | $I$. $0$ |
| $B$. $[Fe(H_2O)_6]^{2+}$ | $II$. $3$ |
| $C$. $[Co(NH_3)_6]^{3+}$ | $III$. $2$ |
| $D$. $[Ni(NH_3)_6]^{2+}$ | $IV$. $4$ |
| Complexes | No. of unpaired electrons |
| $A. [CrF_6]^{4-}$ | $P. 5$ |
| $B. [MnF_6]^{4-}$ | $Q. 2$ |
| $C. [Cr(CN)_6]^{4-}$ | $R. 1$ |
| $D. [Mn(CN)_6]^{4-}$ | $S. 4$ |
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