Single Choice

The calculated spin-only magnetic moments (BM) of the anionic and cationic species of $$[Fe(H_2O)_6]_2$$ and $$[Fe(CN)_6]$$, respectively, are:

A$$4.9$$ and $$0$$
Correct Answer
B$$2.84$$ and $$5.92$$
C$$0$$ and $$4.9$$
D$$0$$ and $$5.92$$

Solution

Solution:- (C) $$0$$ and $$4.9$$

Complex is $$[Fe(H_2O)_6]_2 [Fe(CN)_6]$$

Complex ion
Configuration
No. of unpaired electrons
Magnetic moment
$$[Fe(H_2O)_6]^{2+}$$

$$[Fe(CN)_6]^{4-}$$ $$t_{2g}^4 \,e_g^2$$

$$t_{2g}^6 \,e_g^0$$ $$4$$

$$0$$ $$4.9 \,BM$$

$$0$$

SIMILAR QUESTIONS

d - block and f - block Elements

Select the correct order with respect to paramagnetic property of the ions.

d - block and f - block Elements

The magnetic moment of $$[Cu(NH_{3})_{4}]^{2+}$$ was found to be 1.73 B.M. The number of unpaired electrons in the complex is:

d - block and f - block Elements

Which of the following ions having the following electronic structure would have a maximum magnetic moment?

d - block and f - block Elements

Titanium shows the magnetic moment of 1.73 B.M. in its compound. What is the oxidation number of $$Ti$$ in the compound?

d - block and f - block Elements

The correct order of the spin-only magnetic moment of metal ions in the following low spin complexes, $$[V(CN)_6]^{4-}, [Fe(CN)_6]^{4-}$$, $$[Ru(NH_3)_6]^{3+}, $$ and $$[Cr(NH)_3)_6]^{2+}$$, is:

d - block and f - block Elements

Consider the hydrates ions of $$Ti^{2+}, V^{2+}, Ti^{3+}$$ and $$Sc^{3+}$$. The correct order of their spin-only magnetic moments is:

d - block and f - block Elements

The INCORRECT statement is:

d - block and f - block Elements

The correct order of spin-only magnetic moments among the following is: (Atomic number: $$Mn=25, Co=27, Ni=28, Zn=30)$$.

d - block and f - block Elements

Which of the following transition metal ions will have definite value of magnetic moment?

d - block and f - block Elements

Which of the following has the highest paramagnetism?

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