Question

A complex containing Mn2+ and Br ion was found to have a magnetic moment of 5.92 BM. The probable formula and geometry of the complex is most likely to be :

Solution

Correct option is

[MnBr4]2–, tetrahedral

 

Since the complex has a magnetic moment 5.92 B.M. So it has 5 unpaired electrons. 

In Mn2+ the electronic configuration is 3d5 i.e.,

It will show sp3 hybridisation and geometry will be tetrahedral.

SIMILAR QUESTIONS

Q1

 

Consider the complex : K3[Co(C2O4)2Cl2

The coordination number, the oxidation number of Co and the number of unpaired electrons on the metal are respectively

Q2

Pick out the paramagnetic species of the following

Q3

 

Arrange the following in the increasing order of paramagnetism : 

I: [Fe(H2O)6]Cl3

II: K4[Fe(CN)6

III: K3[Fe(CN)6

IV: [Fe(H2O)6]SO4.H2O

Q4

Which of the following is a high spin complex ion?

Q5

Which of the following is a spin paired complex ion?

Q6

Which of the following complexes does not show the geometric isomerism?

Q7

The ion  is expected to have x isomers. x is

Q8

 

Which method can be used to distinguish

[Co(NH3)6][Cr(NO2)6] and [Cr(NH3)6][Co(NO2)6]

Q9

Select the complex that involves outer hybridization of central metal ion.

Q10

 

A solution of ‘X’ containing 0.02 mole of ‘X’ per litre is mixed with another solution, a solution of ‘Y’ containing 0.02 mole of ‘Y’ per litre. 

     1 L of mixture solution + AgBO3 → ‘A’ ↓ 

     1 L of mixture solution + Excess BaCl2 → ‘B’↓  

If  ‘X’ is [Co(NH3)5SO4]Br, and    

     ‘Y’ is [Co(NH3)5Br]SO4,

then the number of moles of ‘A’ and ‘B’ obtained are, respectively