Home
Class 12
CHEMISTRY
The radiocative lanthanide is...

The radiocative lanthanide is

A

ytterbium `(Yb)`

B

iron `(Fe)`

C

promethium `(Pm)`

D

copper `(Cu)`

Text Solution

Verified by Experts

The correct Answer is:
C
promethium is synthetic and radioactive element.
Promotional Banner

Topper's Solved these Questions

  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise Section B - Assertion Reasoning|42 Videos

  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise AIPMT/NEET Questions|31 Videos

  • THE D AND F BLOCK ELEMENTS

    A2Z|Exercise KMnO_4 And K_2Cr_2O_55|1 Videos

  • SURFACE CHEMISTRY

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

Lanthanides are

The first lanthanide is

Unit of decay constant of radiocative disintegration is

The steady decrease along the lanthanide series is called lanthanide contraction and in all amounts to

A2Z-THE D AND F BLOCK ELEMENTS-Lanthanides And Actinides
  1. Across the lanthanide series, the basicity of the lanthanoid hydroxide...

    Text Solution

    |

  2. Lanthanides and actinides resemble in

    Text Solution

    |

  3. Lanthanides contraction cause.

    Text Solution

    |

  4. The speration of lanthanides by ion exchanges method is based on

    Text Solution

    |

  5. The radiocative lanthanide is

    Text Solution

    |

  6. Complete the following reaction

    Text Solution

    |

  7. The pair of lanthanides with the highest third ionization energy is

    Text Solution

    |

  8. All actinods have high desities except

    Text Solution

    |

  9. Which one of the following is an electronic configuration of thorium?

    Text Solution

    |

  10. Consider the following statement, (I) The size of the lanthanide M^(...

    Text Solution

    |

  11. The actinoids exhibit, more member of oxidation states in general than...

    Text Solution

    |

  12. Which of the following factor may be regarded as the main cause of lan...

    Text Solution

    |

  13. In which 5f subshell is half-filled?

    Text Solution

    |

  14. The actinides showing +7 oxidation state are:

    Text Solution

    |

  15. Which of the following is not an actinide?

    Text Solution

    |

  16. Which of the following statements is not correct?

    Text Solution

    |

  17. Which of the following elements shows maximum number of different oxid...

    Text Solution

    |

  18. Gadolinium (Gd) has 4f^(7) 5 d^(1) 6s^(2) electronic configuration out...

    Text Solution

    |

  19. Which of the following elements is not an actinide?

    Text Solution

    |

  20. Which of the following graphs shown correct trends in the size of + 3 ...

    Text Solution

    |