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The substances which contain species wit...

The substances which contain species with unpaired electrons in their orbitals behave as paramagnetic sustances. Such substances are weakly attracted by the magnetic field. The paramagnetism is expressed in terms of magnetic moment. The magnetic moment is related to the number of unpaired electrons according tot he following relation:
Magnetic moment `mu=sqrt(n(n+2))BM`
where n=number of unpaired electrons.
BM stands for Bohr magneton, a unit of magnetic moment.
`1BM=(eh)/(4pimc)=9.27xx10^(-24)Am^(2)` or `JT^(-1)`
Q. Which of the following ions has the highest magnetic moment?

A

`Fe^(2+)`

B

`Mn^(2+)`

C

`Cr^(3+)`

D

`V^(3+)`

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • The substances which contain species with unpaired electrons in their orbitals behave as paramagnetic sustances. Such substances are weakly attracted by the magnetic field. The paramagnetism is expressed in terms of magnetic moment. The magnetic moment is related to the number of unpaired electrons according tot he following relation: Magnetic moment mu=sqrt(n(n+2))BM where n=number of unpaired electrons. BM stands for Bohr magneton, a unit of magnetic moment. 1BM=(eh)/(4pimc)=9.27xx10^(-24)Am^(2) or JT^(-1) Q. Which of the following ions are diamagnetic?

    A
    `He^(2+)`
    B
    `Sc^(3+)`
    C
    `Mg^(2+)`
    D
    `O^(2-)`

  • The substances which contain species with unpaired electrons in their orbitals behave as paramagnetic sustances. Such substances are weakly attracted by the magnetic field. The paramagnetism is expressed in terms of magnetic moment. The magnetic moment is related to the number of unpaired electrons according tot he following relation: Magnetic moment mu=sqrt(n(n+2))BM where n=number of unpaired electrons. BM stands for Bohr magneton, a unit of magnetic moment. 1BM=(eh)/(4pimc)=9.27xx10^(-24)Am^(2) or JT^(-1) Q. Which of the following ions has magnetic moment equal to that of Ti^(3+) ?

    A
    `Cu^(2+)`
    B
    `Ni^(2+)`
    C
    `Co^(2+)`
    D
    `Fe^(2+)`

  • The substances which contain species with unpaired electrons in their orbitals behave as paramagnetic sustances. Such substances are weakly attracted by the magnetic field. The paramagnetism is expressed in terms of magnetic moment. The magnetic moment is related to the number of unpaired electrons according tot he following relation: Magnetic moment mu=sqrt(n(n+2))BM where n=number of unpaired electrons. BM stands for Bohr magneton, a unit of magnetic moment. 1BM=(eh)/(4pimc)=9.27xx10^(-24)Am^(2) or JT^(-1) Q. An ion of a d-block element has magnetic moment 5.92 BM. Select the ion among the following:

    A
    `Zn^(2+)`
    B
    `Sc^(3+)`
    C
    `Mn^(2+)`
    D
    `Cr^(3+)`

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