Home
Class 12
CHEMISTRY
Which of the following is the correct sq...

Which of the following is the correct squence of atomic weights of given elements?

A

`Ni gt Co gt Fe`

B

`Fe gt Co gt Ni`

C

`Co gt Fe gt Ni`

D

`Co gt Ni gt Fe`

Text Solution

Verified by Experts

The correct Answer is:
D
Fe (Z=26) , Atomic weight =55.85
Co(Z=27) , Atomic weight =58.93
Ni(Z=28) , Atomic weight =58.69
The correct order of Atomic weights is `CO gt Ni gt Fe`
Promotional Banner

Topper's Solved these Questions

  • AIIMS 2000

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

  • AIIMS 2002

    AIIMS PREVIOUS YEAR PAPERS|Exercise CHEMISTRY|60 Videos

Similar Questions

Explore conceptually related problems

Which one of the following is the correct sequence of the given elements in the increasing order of their reactivity ?

The number of electrons in the atom of an element X is 18 and the number of neutrons is 22. Which of the following is the correct representation of an atom of this element?

The number of electrons in the atom of an element X is 15 and the number of neutrons is 16. Which of the following is the correct representation of an atom of this element ?

which of the following is the incorrect match for atom of element?

Given : 1 = Natural selection , 2 = Variations and their inheritance , 3 = Survival of the fittest , 4 = struggle for existence According the Darwinism, which of the following represents the correct squence of events in the origin of new species ?

Mendeleff corrected the atomic weight of

Medeleeff corrected the atomic weight of :

AIIMS PREVIOUS YEAR PAPERS-AIIMS 2001-CHEMISTRY
  1. What volume of NH(3) gas at STP would be needed to prepare 100 ml of 2...

    Text Solution

    |

  2. The equilibrium constant of a reaction is 300, if the volume of the re...

    Text Solution

    |

  3. Which of the following is the correct squence of atomic weights of giv...

    Text Solution

    |

  4. The aqueous solution of which of the following salt will have the lowe...

    Text Solution

    |

  5. Which of the following alkanes is optically active ?

    Text Solution

    |

  6. A solution with pH=2 is more acidic than one with a pH =6 , by a facto...

    Text Solution

    |

  7. Vapour pressure of benzene at 30^(@)C is 121.8 mm. When 15 g of a non-...

    Text Solution

    |

  8. BCl3 molecule is planar while NCl3 is pyramidal because

    Text Solution

    |

  9. Which of the following compound is not coloured ?

    Text Solution

    |

  10. 0.1890g of an organic compound gave 0.2870g of silver chloride by Cari...

    Text Solution

    |

  11. Which of the following statement is not true about alcohols ?

    Text Solution

    |

  12. The electronic configuration 1s^(2) 2s^(2) 2p^(5) 3s^(1) shows

    Text Solution

    |

  13. Assertion(A): Relative strength of acids can be known by knowing the v...

    Text Solution

    |

  14. Statement 1: o-nitrophenol has higher boilling point than p-nitropheno...

    Text Solution

    |

  15. Assertion (A) : CH(3)OCH(3) and C(2)H(5)OH has comparable molecular we...

    Text Solution

    |

  16. Assertion(A) : CHCl(3) and CH(3)OH are miscible . Reason (R) : On...

    Text Solution

    |

  17. Assertion: In some cases oxygen shows positive oxidation number though...

    Text Solution

    |

  18. Assertion (A) : B(2)H(6),SiH(6) are said to have similar structure . ...

    Text Solution

    |

  19. Hydrogen nucleus combines to form helium then energy is released. Bi...

    Text Solution

    |

  20. Water is used as a moderator in nuclear reactor. Moderator is a ligh...

    Text Solution

    |