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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr3+ ion is ______.

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प्रश्न

The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr3+ ion is ______.

पर्याय

  • 2.87 B.M.

  • 3.87 B.M.

  • 3.47 B.M.

  • 3.57 B.M.

MCQ
रिकाम्या जागा भरा
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उत्तर

The magnetic moment is associated with its spin angular momentum and orbital angular momentum. Spin only magnetic moment value of Cr3+ ion is 3.87 B.M..

Explanation:

Cr3+ → [Ar]3d3 4s0, it has 3 unpaired electrons.

`mu = sqrt(n(n + 2))`

`mu = sqrt(3(3 + 2))`

`mu = sqrt(3(5))`

`mu = sqrt(15)`

μ = 3.87 B.M.

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पाठ 8: The d-and f-Block Elements - Multiple Choice Questions (Type - I) [पृष्ठ १०८]

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एनसीईआरटी एक्झांप्लर Chemistry Exemplar [English] Class 12
पाठ 8 The d-and f-Block Elements
Multiple Choice Questions (Type - I) | Q 15 | पृष्ठ १०८

संबंधित प्रश्‍न

Why is Sc3+ colourless while Ti3+ coloured? (Atomic number Sc = 21, Ti =22)


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`MnO_4^(-) + H_2O + I^(-) ->`


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E° value for the Mn3+/Mn2+ couple is much more positive than that for Fe3+/Fe2+.


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  Column I (Property) Column II (Metal)
(i)  An element which can show +8 oxidation state (a) \[\ce{Mn}\]
(ii)  3d block element that can show (b) \[\ce{Cr}\]
  upto +7 oxidation state (c) \[\ce{Os}\]
(iii)  3d block element with highest melting point (d) \[\ce{Fe}\]

Identify the metal and justify your answer.

Carbonyl \[\ce{M(CO)5}\]


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List - I List - II
(A) [Fe(CN)6]3− (i) 5.92 BM
(B) [Fe(H2O)6]3+ (ii) 0 BM
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Ionisation enthalpies


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