Home
Class 12
CHEMISTRY
The calculated spin only magnetic moment...

The calculated spin only magnetic moment of `Cr^2+` ion is:

A

3.87 BM

B

4.90 BM

C

5.92 BM

D

2.84 BM

Text Solution

Verified by Experts

The correct Answer is:
B
Electronic configuration of `Cr - [Ar] 3d^5 4 s^1`
Electronic configuration of `Cr^(2+) - [Ar]3d^4`
Number of unpaired `e^(-) = 4`
Spin only magnetic moment ` = sqrt(n (n + 2))`
Spin only magnetic moment `e^(-)`
Spin only magnetic moment ` = sqrt(4 (4 + 2))`
`sqrt24 BM`
` = 4.9 BM`
Promotional Banner

Topper's Solved these Questions

  • THE d-AND f- BLOCK ELEMENTS

    ERRORLESS|Exercise Assertion and Reason |11 Videos

  • THE d-AND f- BLOCK ELEMENTS

    ERRORLESS|Exercise NCERT BASED QUESTIONS (Compounds of Transitional Elements)|163 Videos

  • SURFACE CHEMISTRY

    ERRORLESS|Exercise ASSERTION AND REASON|14 Videos

  • THE P -BLOCK ELEMENTS (NITROGEN, OXYGEN, HALOGEN AND NOBLE FAMILY)

    ERRORLESS|Exercise ASSERTION & REASON|22 Videos

Similar Questions

Explore conceptually related problems

The calculated spin only magnetic moments of [Cr(NH_3)_6]^(3+) and [CuF_6]^(3-) in BM respectively are

The spin only magnetic moment of Mn^(4+) ion is nearly

The spin only magnetic moment of Mn^(4+) ion is nearly

Spin only magnetic moment of [PtCl_4]^(2-) is

Calculate the spin only magentic moment of M^(2+) ion (Z=27) .

The highest value of the calculated spin-only magnetic moment (in BM) among all the transition metal complexes is :

ERRORLESS-THE d-AND f- BLOCK ELEMENTS -Past Years Questions
  1. Which of the statements is not true ?

    Text Solution

    |

  2. Which of the following does not give oxygen on heating ?

    Text Solution

    |

  3. KMnO4 can be prepared fromK2MnO4 as per the reaction: The reaction ...

    Text Solution

    |

  4. The reaction of aqueous KMnO(4) with H(2)O(2) i acidic conditions give...

    Text Solution

    |

  5. F2 is the formed by reacting K2MnF6 with

    Text Solution

    |

  6. Assuming complete ionization, same moles of which of the following com...

    Text Solution

    |

  7. To protect iron against corrosion, the most suitable metal plating on ...

    Text Solution

    |

  8. When copper is heated with conc.HNO(3) it produces

    Text Solution

    |

  9. Silver obtained from argentiferrous lead containing lead impurity is p...

    Text Solution

    |

  10. Which of the following metals is obtained by leaching out process usin...

    Text Solution

    |

  11. Which of the following does not react with AgCl?

    Text Solution

    |

  12. Zn gives H(2) gas with H(2)SO(4) and HCl but not with HNO(3) because

    Text Solution

    |

  13. The compound insoluble in water is

    Text Solution

    |

  14. Name the gas that can readily decolourise acidified KMnO(4) solution:

    Text Solution

    |

  15. The magnitude and permanganate ions are tetrahedral due to

    Text Solution

    |

  16. The calculated spin only magnetic moment of Cr^2+ ion is:

    Text Solution

    |

  17. Identify the incorrect statement

    Text Solution

    |

  18. Urea reacts with water to form A which will decompose to form B. B whe...

    Text Solution

    |

  19. Zr(Z=40) and Hf(Z=72) have similar atomic and ionic radii because of:

    Text Solution

    |

  20. The incorrect statement among the following is

    Text Solution

    |