Asked Nov 20, 2019

Predict the magnetic moment (spin only) for the following complexes.

[Cr(H2O)6] 2+



Expert Answer

Step 1

The coordination complexes can be defined as the complex compounds which have coordinate linkage between metal and ligand. Here metal usually belongs to transition metals as they can show variable oxidation states and ligands are atoms or group of atoms which can donate their extra electrons to form coordinate bond.

Step 2

The spin only magnetic moment can be calculated with the help of give formula;


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Enn+2) Here spin onlymagnetic moment n mumber of unpaired electrons in metal ion

Step 3

Part (a):

In [Cr(H2O)6]2+ complex ion, H2O is a neutral ligand hence the +2 charge must be on Cr metal atom that makes it Cr2+ ion. The electronic configuration of Cr2+ ion prove...


Image Transcriptionclose

Cr21s, 2s2, 2p5,3s2, 3p6, 4s2, 3d2 n(n+2) n 2 2.83 BM


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