In potassium ferrocyanide,there are ......... | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) The chemical formula for potassium ferrocyanide is $K_4[Fe(CN)_6]$.In this complex,the iron is in the $+2$ oxidation state: $Fe^{+2} = [Ar] 3d^6$.

Vedclass · Accepted Answer

$3$

Vedclass · Answer

(B) The chemical formula for potassium ferrocyanide is $K_4[Fe(CN)_6]$.In this complex,the iron is in the $+2$ oxidation state: $Fe^{+2} = [Ar] 3d^6$.The ligand $CN^-$ is a strong field ligand $(SFL)$,which causes pairing of electrons in the $d$-orbitals.According to Crystal Field Theory for an octahedral complex,the $d$-orbitals split into $t_{2g}$ and $e_g$ sets.For $d^6$ configuration with a strong field ligand,all $6$ electrons occupy the $t_{2g}$ orbitals: $t_{2g}^6 e_g^0$.Since there are $6$ electrons in the $t_{2g}$ set,they form $6/2 = 3$ pairs of electrons.

In potassium ferrocyanide,there are $..........$ pairs of electrons in the $t_{2g}$ set of orbitals.

Similar Questions

Which of the following complex ions absorbs the light of minimum wavelength?

Number of complexes with an even number of electrons in $t_{2g}$ orbitals is -
$[Fe(H_2O)_6]^{2+}, [Co(H_2O)_6]^{2+}, [Co(H_2O)_6]^{3+}, [Cu(H_2O)_6]^{2+}, [Cr(H_2O)_6]^{2+}$

Write a note on crystal field theory.

The spin magnetic moment of an octahedral complex having $CFSE = -0.8 \Delta_{0}$ and surrounded by weak field ligands can be:

In which of the following coordination entities the magnitude of $\Delta_o$ ($CFSE$ in octahedral field) will be maximum? (Atomic Number of $Co = 27$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module