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  4. The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of CoCl 3 .4 NH 3 is (Round off to the Nearest Integer).

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Q. The equivalents of ethylene diamine required to replace the neutral ligands from the coordination sphere of the trans-complex of $CoCl _{3} .4 NH _{3}$ is______ (Round off to the Nearest Integer).

JEE MainJEE Main 2021Coordination Compounds

Solution:

trans$- CoCl _{3} .4 NH _{3}$
or
trans-[Co(NH $\left.\left._{3}\right)_{4} Cl _{2}\right] C \ell$
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As we know that ethylene diamine is a bidentate ligand and ammonia is a mono dentate ligand. It means overall two ethylene diamine is required to replace the all neutral ligands (four ammonia) from the coordination sphere of this complex.