Home
Class 12
CHEMISTRY
Magnetic moment of Cr^(2+) is nearest to...

Magnetic moment of `Cr^(2+)` is nearest to -

A

`Fe^(2+)`

B

`Mn^(2+)`

C

`Co^(2+)`

D

`Ni^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
A
`Cr^(2+)=3d^(4)`, number of unpaired electrons (n) = 4
Magnetic moment `= sqrt(n(n+2))BM=sqrt(4(4+2))=sqrt(24)BM`
`Fe^(2+)=3d^(6)`, number of unpaired electrons (n) = 4
Magnetic moment `= sqrt(4(4+2))BM=sqrt(24)BM`
`Mn^(2+)=3d^(5)`, number of unpaired electrons (n) = 5
Magnetic moment `= sqrt(5(5+2))BM = sqrt(35)BM`
`Co^(2+)=3d^(7)` , number of unpaired electrons (n) = 3
Magnetic moment `= sqrt(3(3+2))BM = sqrt(15)BM`
`Ni^(2+)=3d^(8)`, number of unpaired electrons (n) = 2
Magnetic moment `= sqrt(2(2+2))BM = sqrt(8)BM`
Promotional Banner

Topper's Solved these Questions

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Multiple Choice Question)|31 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise SOLVED NCERT EXEMPLAR PROBLEMS (Short Answer Type)|20 Videos

  • D - AND F - BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILL (HOTS) QUESTIONS|28 Videos

  • COORDINATION COMPOUNDS OR COMPLEX COMPOUNDS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 21|2 Videos

  • ELECTROCHEMISTRY

    CHHAYA PUBLICATION|Exercise PRACTICE SET 4(Answer the following questions)|14 Videos

Similar Questions

Explore conceptually related problems

Calculate the magnetic moment of Cu^(3+) ion .

Although Cr^(3+) and Co^(2+) ions have same number of unpaired electrons but the magnetic moment of Cr^(3+) is 3.87 BM and that of Co^(2+) is 4.87 BM. Why ?

Calculate the value of 'spin only' magnetic moment of M^(2+)(aq) atomic number of M = 27.

Calculate spin only magnetic moment of Cu^(2+) .

Calculate spin only magnetic moment of Ni^(2+) ion.

The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr^(3+) ion is -

The value of magnetic moment is the same for -

Magnetic moment of [MnCl_(4)]^(2-) is 5.92 BM. Explain.

Magnetic moments of actinoids are less than that of lanthanoids. Why ?