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  • Stuck here, help me understand: Magnetic moment 2.84 B.M. is given by: (At. nos, Ni = 28, Ti = 22, Cr = 24, Co = 27)

Magnetic moment 2.84 B.M. is given by: (At. nos, Ni = 28, Ti = 22, Cr = 24, Co = 27)

  • Option 1)

    Cr2+

  • Option 2)

    Co2+

  • Option 3)

    Ni2+

  • Option 4)

    Ti3+

 

Answers (1)

As we discussed in concept

Magnetic Moments (spin only) -

\sqrt{n\left ( n+2 \right )} where n= number of unpaired electron.

- wherein

Number of unpaired e^{-} s and corresponding magnetic moments

1\rightarrow 1.7\\2\rightarrow 2.8\\3\rightarrow 3.9\\4\rightarrow 4.9\\5\rightarrow 5.9

 

 For magnetic moment 2.84 the numbers of unpaired electrons should be two.

Ions Unpaired Electrons
Cr^{2+} 4
Co^{2+} 3
Ni^{2+} 2
Ti^{3+} 1

 


Option 1)

Cr2+

Incorrect

Option 2)

Co2+

Incorrect

Option 3)

Ni2+

Correct

Option 4)

Ti3+

Incorrect

Posted by

Sabhrant Ambastha

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