Question:
What is the magnetic moment of $ Fe^{3+} $ ion in $ [Fe(CN)_6]^{3-} $ ?
What is the magnetic moment of $ Fe^{3+} $ ion in $ [Fe(CN)_6]^{3-} $ ?
Updated On: Jun 14, 2022
- $ 1.73\,BM $
- $ 5.9\,BM $
- $Diamagnetic$
- None of these
Hide Solution
Verified By Collegedunia
The Correct Option is A
Solution and Explanation
$Fe^{3+}=[Ar] 3d^{5}$
$(\because CN^{-}$ being a strong field ligand causes pairing)
$\therefore$ Magnetic moment, $\mu = \sqrt{n(n+2)} BM$
(where, $n$ = number of unpaired electrons)
$=\sqrt{1 (1+2)} =\sqrt{3}$
$=1.73\,BM$
$(\because CN^{-}$ being a strong field ligand causes pairing)
$\therefore$ Magnetic moment, $\mu = \sqrt{n(n+2)} BM$
(where, $n$ = number of unpaired electrons)
$=\sqrt{1 (1+2)} =\sqrt{3}$
$=1.73\,BM$
Was this answer helpful?
0
0
Top Questions on coordination compounds
- If an iron (III) complex with the formula \[\left[ \text{Fe}(\text{NH}_3)_x (\text{CN})_y \right]^-\]has no electron in its \( e_g \) orbital, then the value of \( x + y \) is:
- JEE Main - 2024
- Chemistry
- coordination compounds
- Choose the correct statements from the following:
A Ethane-1,2-diamine is a chelating ligand.
B Metallic aluminium is produced by electrolysis of aluminium oxide in presence of cryolite.
C Cyanide ion is used as a ligand for leaching of silver.
D Phosphine acts as a ligand in Wilkinson catalyst.
E The stability constants of \( \text{Ca}^{2+} \) and \( \text{Mg}^{2+} \) are similar to EDTA complexes.- JEE Main - 2024
- Chemistry
- coordination compounds
- Identify the incorrect statement.
- NEET (UG) - 2024
- Chemistry
- coordination compounds
- Which of the following compounds show colour due to d-d transition?
- JEE Main - 2024
- Chemistry
- coordination compounds
- Consider the following complexes:
\([CoCl(NH_3)_5]^{2+}\) (A)
\([Co(CN)_6]^{3-}\) (B)
\([Co(NH_3)_5(H_2O)]^{3+}\) (C)
\([Cu(H_2O)_4]^{2+}\) (D)
The correct order of A, B, C, and D in terms of wavenumber of light absorbed is:- JEE Main - 2024
- Chemistry
- coordination compounds
View More Questions
Questions Asked in AMUEEE exam
- The ratio of the half-life time $ (t_{1/2}) $ , to the three quarter life-time, $ (t_{3/4}) $ , for a reaction that is second order
- AMUEEE - 2018
- Order of Reaction
- $ 0.002\, M $ solution of a weak acid has an equivalent conductance $ (\wedge) 60\, ohm^{-1}\, cm^{2}\, eq^{-1} $ . What will be the $ pH $ ? (Given : $ \wedge = 400 \, ohm^{-1} \, cm^{2} \, eq^{-1} $ ]
- AMUEEE - 2018
- Electrochemistry
- The electrode potential, $ E^{\circ} $ , for the reduction of $ MnO^{-}_{4} $ to $ Mn^{2+} $ in acidic medium is $ +1.51\, V $ . Which of the following metal(s) will be oxidised? The reduction reactions and standard electrode potentials for $ Zn^{2+}, Ag^{+} $ , and $ Au^{+} $ are given as $ Zn^{2+} (aq) +2e \to Zn(s), E^{\circ} = -0.762\, V $ $ Ag+ (aq) +e {\rightleftharpoons} Ag (s), E^{\circ}=+0.80 \,V $ $ Au^{+} (aq) +e {\rightleftharpoons} Au(s), E^{\circ}+1.69\,V $
- AMUEEE - 2018
- Electrochemistry
- Three particles, two with masses $ m $ and one with mass $ M $ , might be arranged in any of the four configurations shown below. Rank the configurations according to the magnitude of the gravitational force on $ M $ , least to greatest
- AMUEEE - 2018
- Gravitation
- The only force acting on a $ 2 \,kg $ body that is moving in $ xy- $ plane has a magnitude of $ 5\, N $ . The body initially has a velocity of $ 4 \,m/s $ in the positive $ x $ -direction. Some time later, the body has a velocity of $ 6 \,m/s $ in the positive $ y- $ direction. The work done on the body by the $ 5 \,N $ force during this time is
- AMUEEE - 2018
- work, energy and power
View More Questions
Concepts Used:
Coordination Compounds
A coordination compound holds a central metal atom or ion surrounded by various oppositely charged ions or neutral molecules. These molecules or ions are re-bonded to the metal atom or ion by a coordinate bond.
Coordination entity:
A coordination entity composes of a central metal atom or ion bonded to a fixed number of ions or molecules.
Ligands:
A molecule, ion, or group which is bonded to the metal atom or ion in a complex or coordination compound by a coordinate bond is commonly called a ligand. It may be either neutral, positively, or negatively charged.