Considering spin-orbit coupling, the multiplet width for ion is
To calculate the multiplet width (WSO) for Eu³⁺, we use the formula:
Europium (Z = 63) in its neutral state has configuration [Xe]4f⁷6s². Upon losing 3 electrons to form Eu³⁺, its configuration becomes: [Xe] 4f⁶
Number of unpaired electrons = 6 (for 4f⁶)
Maximum multiplicity implies S = 3 (since each unpaired electron contributes ½ spin)
The total orbital angular momentum (L) for 4f⁶ is L = 3 (based on standard term symbol for f⁶ configuration)
Now apply the formula:
Mossbauer spectrum of at liquid nitrogen temperature in the presence of a field gradient and taking into effect quadrupole interaction [For 57Fe,I=1/2 for the ground state and I = 3/2 for the first excited state], shows a
Consider the 31P NMR (decoupled from 1H and 195Pt) spectra for the isomers of 'A' and 'B' [IrCl3(PMe3)3], separately. The number of 31P NMR signals for the different isomers of the complexes are given in the table below. The correct answer is set.
Among the following statements, select those which best describe plastocyanine
A. Coordination geometry of Cu2+\text{Cu}^{2+}CuIICu^{II}CuII
-ion is distorted tetrahedron
B. The geometry around Cu2+\text{Cu}^{2+}
changes to square-planar on reduction
C. In EPR spectrum, the A∥ values are smaller in plastocyanine than in
D. The active site contains the amino acids histidine and cysteine only
Choose the correct answer from the options given below:
Th ground state term symbol and the value for ion, respectively are (Atomic number of Pr is 59)
Consider the following reactions.
The correct stereochemical dispositions of the Br ligands in A and the CO ligands in B, respectively, are
In solution, Vaska's complex is known to bind reversibly. In the product, oxidation state of the metal ion center coordination geometry and mode of binding of , respectively are
The reaction(s)/ event(s) used to prove the existence of neutrinos is/are
A.
B.
C.
Choose the correct answer from the options given below:
Isolobal pairs from the fragments (A-D) is/are
A. {BH}
B.
C. {P}
D.
Choose the correct answer from the options given below:
Among the following feasible reaction(s) is/are?
A.
B.
C.
Choose the correct answer from the options given below:
Consider following statements regarding the magnetic moment of the 3d transition metal complexes:
A. Octahedral complexes of (high spin) and (high spin) have approximately equal to their values.
B. Tetrahedral complexes of and octahedral complexes of have orbital contribution added to their magnetic moments.
C. Orbital contribution is quenched for metal ions having A or E ground state.
D. Octahedral complexes of have value at 300 K due to orbital contribution added to their magnetic moments
Choose the correct answer from the options given below:
