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Anion of X will be tetrahedral and that of Y will be square planarAnion of X will be square planar but that of Y will be tetrahedral Both the anions will be tetrahedral Both the anions will be square planar

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In Hg `[Co(SCN)_(4)](X),` the cobalt is in +2 oxidation state. <br> `mu=sqrt(n(N+2)),` So, 3.78 B.M.`=sqrt(n(n+2)) or n=3` <br> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_CC_S01_008_S01.png" width="80%"> <br> In Hg `[Co(NCS)_(4)]` (Y), the cobalt is in +2 oxidation state. Further'spin only ' magnetic moment of complex, <br> `Hg[Co(NCS)_(4)]` is 1.73 B.M. So, `mu=sqrt(n(n+2)), ` So, 1.73 B.M`=sqrt(n(N+2)) or n=1` <br> <img src="https://d10lpgp6xz60nq.cloudfront.net/physics_images/RES_CHM_CC_S01_008_S02.png" width="80%"> ltrbgt so, X is tetrahedral and Y is square planar. **Addition Compound And Complex Compound**

**WERNER’S THEORY OF COORDINATION COMPOUNDS**

**Werner Theory 2**

**DEFINITIONS OF SOME IMPORTANT TERMS PERTAINING TO COORDINATION COMPOUNDS (COORDINATION NO., DENTICITY, CHELATION, LIGAND)**

**Some Terms**

**Types Of Ligands**

**Nomenclature 1**

**Nomenclature 2**

**Nomenclature 3**

**GEOMETRICAL ISOMERISM IN CN-4**