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Calculate the magnetic moment of a dival...

Calculate the magnetic moment of a divalent ion in aqueous solution if its atomic number is 25.

Text Solution

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`Z=25` is for Mn . Its E.C.` = [Ar]^(18) 3d^(5) 4s^(2)` . E.C. of its divalent ion `= [ Ar]^(18) 3d^(5) `. Thus , it has 5 unpaired electrons.
`:. ` Magnetic moment `(mu) = sqrt(n(n+2)) ` B.M. `(or mu_(B)) = sqrt(5(5+2)) = 5.92 mu_(B)`
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Knowledge Check

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    Much greater than one
    B
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    C
    Between zero and one
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    much greater than one
    B
    1
    C
    between zero and one
    D
    equal to zero

  • The magnetic moment of a diamagnetic atom is

    A
    Much greater than one
    B
    1
    C
    Between zero and one
    D
    Equal to zero

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