Home
Class 12
CHEMISTRY
The atomic radii of the elements are alm...

The atomic radii of the elements are almost same of which series

A

Fe - Co - Ni

B

Na - K - Rb

C

F-CI - Br

D

Li - Be-B

Text Solution

Verified by Experts

The correct Answer is:
A
Fe-Co-Ni with the increase in the d-electrons, screening effect increases, this counter balances the increased nuclear charge due to increase in, atomic number. As a result atomic radii remain practically same after chromium.
Promotional Banner

Topper's Solved these Questions

  • THE D- AND F-BLOCK ELEMENT

    BRILLIANT PUBLICATION|Exercise LEVEL-II|100 Videos

  • THE D- AND F-BLOCK ELEMENT

    BRILLIANT PUBLICATION|Exercise LEVEL-II (ASSERTION-REASON TYPE)|40 Videos

  • SURFACE CHEMISTRY

    BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL - II) (ASSERTION REASON TYPE QUESTIONS) |6 Videos

  • THE D-AND F-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise QUESTIONS (LEVEL-III)|50 Videos

Similar Questions

Explore conceptually related problems

Account for the following trends in atomic and ionic radii of transition metals. The atomic radii of the corresponding elements in '4d' series and 5d series are virtually the same.

Account for the following trends in atomic and ionic radii of transition metals. The atomic radii of elements in 4d series are more than that of corresponding elements in 3d series.

The atomic number of an element is derived from.

The atomic radii of the second and third transition series are almost the same. Why?

Define atomic number of an element?

The atomic number of four elements are given below. Which of them are inert gases ?

The atomic number of an element is 19. Write any one characteristic of the block to which the element belongs.

In d-block elements the radii of elements of third transition series are similar to those of the elements of second transition series. Give reason.

BRILLIANT PUBLICATION-THE D- AND F-BLOCK ELEMENT-LEVEL-II (ASSERTION-REASON TYPE)
  1. The atomic radii of the elements are almost same of which series

    Text Solution

    |

  2. Assertion : Zn, Cd and Hg are not considered as transition metals. R...

    Text Solution

    |

  3. Assertion : Anhydrous copper (II) chloride is covalent while anhydrous...

    Text Solution

    |

  4. Assertion : All the members of actinide series are radioactive in natu...

    Text Solution

    |

  5. Assertion : Transition metals show variable valency. Reason : Transi...

    Text Solution

    |

  6. Assertion : Silver fluoride is soluble in water. Reason : Hydration ...

    Text Solution

    |

  7. Assertion : Magnetic moment values of actinides are lesser than the th...

    Text Solution

    |

  8. Assertion : MnO is basic whereas Mn2O7, is acidic. Reason : Higher ...

    Text Solution

    |

  9. Assertion . The reaction of oxalic acid with acidified KMnO4 proceeds ...

    Text Solution

    |

  10. Assertion : In transition elements, radii of 5d series are virtually t...

    Text Solution

    |

  11. Assertion : The maximum oxidation state of chromium in its compounds i...

    Text Solution

    |

  12. Assertion : Magnetic moment of Mn^(2+) " is less than that of " Cr^(2+...

    Text Solution

    |

  13. Assertion : In the series Sc to Zn, the enthalpy of atomisation of zin...

    Text Solution

    |

  14. Assertion : In acidic medium, K2 Cr2 O7 " exists as " Cr2 O7^(2-) (ora...

    Text Solution

    |

  15. Assertion : Zr and Hf occur together in nature and are difficult to se...

    Text Solution

    |

  16. Assertion : The second ionization energies of " "(23) V,""(24)Cr and...

    Text Solution

    |

  17. Assertion": Mn'atom loses ns electrons first during ionization as comp...

    Text Solution

    |

  18. Assertion : In Cr2O7^(2-) ion, all the Cr-O bond lengths are equal. . ...

    Text Solution

    |

  19. Assertion : The purple colour of KMnO4, is due to the charge transfer ...

    Text Solution

    |

  20. Assertion : Atomic size of silver is almost the same as that of gold. ...

    Text Solution

    |

  21. Assertion : Actinoids show larger number of oxidation states than lant...

    Text Solution

    |