Home
Class 12
CHEMISTRY
Zr(Z=40) and Hf(Z=72) have similar atomi...

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

A

diagonal relationship

B

lanthanoid contraction

C

actinoid contraction

D

belonging to the same group.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • THE D- AND F- BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise Some Important Compounds Of Transition Elements|31 Videos

  • THE D- AND F- BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise The Lanthanoids|18 Videos

  • THE D- AND F- BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • SURFACE CHEMISTRY

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

  • THE P-BLOCK ELEMENTS

    NCERT FINGERTIPS|Exercise Assertion And Reason|15 Videos

Similar Questions

Explore conceptually related problems

Zr and Hf have almost equal atomic and ionic radii because of (a) lanthanoid contraction (b) diagonal relationship (c) actinoid contraction (d) belonging to the same group

How would you account for the following? (l) Transition metals exhibit variable oxidation states. (ii) Zr (Z = 40) and Hf (Z = 72) have almost identical radii. (iii) Transition metals and their compounds act as catalyst.

Contraction in atomic and ionic radii is given by

Why alkaline earth metals have smaller ionic and atomic radii as compared to that of alkali metals?

Write the trend the trend of variation in atomic and ionic radii among the alkali metals.

Zr and Hf have identical sizes. Elaborate.

NCERT FINGERTIPS-THE D- AND F- BLOCK ELEMENTS -General Properties Of The Transition Elements
  1. The melting point of copper is higher than that of zinc because

    Text Solution

    |

  2. Due to lanthanoid contraction which of the following properties is not...

    Text Solution

    |

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

    Text Solution

    |

  4. The second and third row elements of transition maetals resemle each o...

    Text Solution

    |

  5. Reactivity of transition elements decreases almost regularly from Sc t...

    Text Solution

    |

  6. Which of the following is not corrextly matched with the given example...

    Text Solution

    |

  7. Cu^(+) ion is not stable in aqueous solution because because of dispro...

    Text Solution

    |

  8. The first ionisation energies of the elements of the first transition ...

    Text Solution

    |

  9. Match the column I with column II and mark the appropriate choice.

    Text Solution

    |

  10. Identify the species in which the metal atom is in +6 oxidation state.

    Text Solution

    |

  11. In which of the following compounds manganese has oxidation number equ...

    Text Solution

    |

  12. E(Mn^(3+)//Mn^(2+))^@is highly positive than that of E(Cr^(3+)//Cr^(2+...

    Text Solution

    |

  13. The correct order of E(M^(2+)//M)^(@) Values with negative sign for th...

    Text Solution

    |

  14. Which of the following d-block element has half - filled penultimate a...

    Text Solution

    |

  15. Fe^(3+) compounds are more stable than Fe^(2+) compounds because

    Text Solution

    |

  16. The salts of Cu in +1 oxidation state are unstable because

    Text Solution

    |

  17. In which of the following pairs of ions, the higher oxidation state in...

    Text Solution

    |

  18. CuSO4 is paramagnetic while ZnSO4 is diamagnetic because

    Text Solution

    |

  19. Which of the following transition metal ions has highest magnetic mome...

    Text Solution

    |

  20. Select the correct option, among Sc(III) , Ti(IV), Pd(II) and Cu(II) i...

    Text Solution

    |