1.

Which amongst the following has zero magnetic moment ?

Answer»

`K[Cr(H_(2)O)_(2)(C_(2)O_(4))_(2)].3H_(2)O`
`CrCl_(3)(PY)_(3)`
`K_(4)[Mn(CN)_(6)]`
`[Co(NH_(3))_(5)CL]CL_(2)`

Solution :`[K^(+1)[Cr^(+3)(H_(2)O)_(2)(C_(2)O_(4))_(2)^(-4)].3H_(2)O`
`{:((Cr^(+3)(py)_(3)Cl_(3)]," "d^(3)),(K_(4)^(+4)[Mn^(+2)(CN)_(6)^(-6)]," "d^(5)),([Co^(+3)(NH_(3))_(5)Cl]Cl_(2)," "d^(6)):}`


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