Coordination CompoundHard
Question
Which of the following pairs will show the same magnetic moment (′spin only′)?
Options
A.[Cr (H2O)6]3+ and [Fe (H2O)5 NO]2+
B.[Mn (CN)6]4- and [Fe (CN)6]3-
C.[Ni (CO)4] and [Zn (NH3)4]2+
D.All of these
Solution
(A)Cr3+, 3d3 ; sp3d2 hybridisation with three unpaired electrons (weak field as well as strong field ligand).
Fe+ , 3d7 ; sp3d2 hybridisation with three unpaired electron (one 4s electron jumps to 3d orbital for the pairing)
(B) Mn2+, 3d5 ; d2sp3 hybridisation with one unpaired electron after pairing (CN- is strong field ligand).
Fe3+, 3d5 ; d2sp3 hybridisation with one unpaired electron after pairing (CN- is strong field ligand).
(C) Ni, 3d8 4s2; sp3 hybridisation and all electrons are paired because CO is strong field ligand (4s-electrons jumps to 3d-orbitals for the pairing)
Zn2+, 3d10; sp3 hybridisation and all electrons are paired.
Fe+ , 3d7 ; sp3d2 hybridisation with three unpaired electron (one 4s electron jumps to 3d orbital for the pairing)
(B) Mn2+, 3d5 ; d2sp3 hybridisation with one unpaired electron after pairing (CN- is strong field ligand).
Fe3+, 3d5 ; d2sp3 hybridisation with one unpaired electron after pairing (CN- is strong field ligand).
(C) Ni, 3d8 4s2; sp3 hybridisation and all electrons are paired because CO is strong field ligand (4s-electrons jumps to 3d-orbitals for the pairing)
Zn2+, 3d10; sp3 hybridisation and all electrons are paired.
Create a free account to view solution
View Solution FreeMore Coordination Compound Questions
Select the correct statement (s)...The number of unpaired electrons calculated in [Co(NH3)6]3+ and [CoF6]3– are :...In which of the following octahedral complexes of Co (at. no. 27), will the magnitude of ᐃo be the highest?...The total number of possible isomers of the compound [CuII(NH3)4] [PtIICl4] are:...A solution containing 2.675 g of CoCl3.6 NH3 (molar mass = 267.5 g mol-1) is passed through a cation exchanger. The chlo...