Coordination Compounds 2 Question 10

####11. The magnetic moment of an octahedral homoleptic Mn(II) complex is 5.9 BM. The suitable ligand for this complex is

(a) CN

(b) ethylenediamine

(c) NCS

(d) CO

Show Answer

Solution:

  1. The magnetic moment of the magnitude 5.9 BM suggest the presence of 5 unpaired electrons in Mn(II). This can be cross verified by putting the value (5) of unpaired electrons in the formula, μ=n(n+2) BM

Thus, the valence electronic configuration of Mn(II) in the complex is

The octahedral homoleptic complex suggests sp3d2-hybridisation in the complex, i.e.

Thus, 5 unpaired electrons are present in the complex which suggest the presence of a weak ligand like NCS.



NCERT Chapter Video Solution

Dual Pane