Home
Class 12
CHEMISTRY
The maximum number of unpaired electrons...

The maximum number of unpaired electrons is present in

A

Fe

B

Cu

C

Co

D

Ni

Text Solution

Verified by Experts

The correct Answer is:
A
`._(26)Fe = [Ar] 3d^(6) 4s^(2)`

`._(29)Cu = [Ar] 3d^(10) 4s^(1)` (one unpaired electron)
`._(27)Co = [Ar] 3d^(7) 4s^2(2)`

`._(28)Ni =[Ar] 3d^(9) 4s^(2)`

Thus , maximum number of unpaired electrons is present in Fe.
Promotional Banner

Topper's Solved these Questions

  • MHTCET 2008

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise CHEMISTRY|50 Videos

  • MHTCET 2010

    MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS|Exercise Chemistry|50 Videos

Similar Questions

Explore conceptually related problems

The maximum number of unpaired electrons can present in p_(x) orbital is

Which of the following contains the maximum number of unpaired electrons ?

The cation containing maximum number of unpaired electrons is

The following ion has the maximum number of unpaired electrons

Which of the following has the maximum number of unpaired electrons ?

Which of the following has the maximum number of unpaired electrons?

MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MHTCET 2009-CHEMISTRY
  1. The calculated mass of ""(20)Ca^(40) is 40.328 u. It releases 306.3...

    Text Solution

    |

  2. Antipyretics are used to

    Text Solution

    |

  3. The maximum number of unpaired electrons is present in

    Text Solution

    |

  4. The pair , that referred as 'chemical twins' is

    Text Solution

    |

  5. Which of the following compounds is optically active ?

    Text Solution

    |

  6. Which of the following alcohols cannot be prepared by reduction of a ...

    Text Solution

    |

  7. Which is a correct integrated rate equation?

    Text Solution

    |

  8. For which order reaction, the unit of rate constant is "time"^(-1) ...

    Text Solution

    |

  9. Ethylidene dichloride is obtained by the reaction of excess of HCl ...

    Text Solution

    |

  10. Ether and alcohol are ... Iosmers.

    Text Solution

    |

  11. Chloroform on reduction with zinc dust and water gives

    Text Solution

    |

  12. The number of hydroxyl ions in 10 cm^(3) of 0.2 M HCl solution is

    Text Solution

    |

  13. In the following reaction, underset("(in excess)")("Ethyl alcohol")+ u...

    Text Solution

    |

  14. The compound that forms a yellow oily liquid with nitrous acid is

    Text Solution

    |

  15. Iso-propyl amine is a

    Text Solution

    |

  16. The number of electrons required to reduced 4.5 xx 10^(-5)g of Al is

    Text Solution

    |

  17. Heat of combustion of methane is - 800 kJ. What is the heat of combust...

    Text Solution

    |

  18. In a solution , 0.02 M acetic acid is 4% dissociation . The [OH^(-)] i...

    Text Solution

    |

  19. Silver salt of carboxylic acid on reaction with R-X gives

    Text Solution

    |

  20. Which of the following travels with the speed of light ?

    Text Solution

    |