Home
Class 12
CHEMISTRY
Lanthanoids are...

Lanthanoids are

A

14 elements in the sixth period (atomic number 90 to 103) that are filling 4f sublevel

B

14 elements in the seventh period (atomic number = 90 to 103) that are filling 57 sublevel

C

14 elements in the sixth period (atomic number = 58 to 71) that are filling the 4f sublevel

D

4 elements in the seventh period (atomic number - 50 to 71) that are filling 4f sublevel

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ALCOHOLS, PHENOLS AND ETHERS

    AAKASH INSTITUTE ENGLISH|Exercise Try yourself|5 Videos

  • ALCOHOLS, PHENOLS AND ETHERS

    AAKASH INSTITUTE ENGLISH|Exercise Exercise|40 Videos

  • ALCOHOLS, PHENOLS AND ETHERS

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|5 Videos

Similar Questions

Explore conceptually related problems

A: Lanthanoids have +3 as most common oxidation state. R: Electrons of 4f in lanthanoids rarely participate

What are lanthanoids? Write the name of the lanthanoids.

Compare the properties of lanthanoids and actinoids.

Why are there fourteen elements in the lanthanoid series?

Which trivalent cation is largest in lanthanoid series ?

The most common oxidation state exhibited by lanthanoids and actinoids is ..................

Why lanthanoids and actinoids are called f-block elements?

What is the difference between the electronic configuration of lanthanoids and actinoids?

Actinoids in general show more oxidation states than the lanthanoids. The main reason for this is

Which of the following characteristic is not the point of similarity between lanthanoids and actinoids?

AAKASH INSTITUTE ENGLISH- ALCOHOLS, PHENOLS AND ETHERS-Assignment Section -D (Assertion - reason type question)
  1. Lanthanoids are

    Text Solution

    |

  2. Assertion : Boiling point of p-nitrophenol is greater than that of o-n...

    Text Solution

    |

  3. A : When C(2) H(5) - O- CH(3) is reacted with one mole of Hl then C(2...

    Text Solution

    |

  4. A : When 3,3-dimethyl butan - 2 - ol is heated in presence of concentr...

    Text Solution

    |

  5. A : In esterification reaction , HCOOH is the most reactive acid among...

    Text Solution

    |

  6. A : Ethers can't be distilled upto dryness due to fear of explosion . ...

    Text Solution

    |

  7. Phenol is less acidic than........... .

    Text Solution

    |

  8. A : CH(3) - underset(O)underset(||)(C)-COOH gives haloform reaction ...

    Text Solution

    |

  9. A : Diphenyl ether is prepared by Williamson synthesis . R : This...

    Text Solution

    |

  10. A : Grignard's reagent is prepared in the presence of ether . R :...

    Text Solution

    |

  11. A : CH(3) - underset(CH(3))underset(|)overset(CH(3))overset(|)(C)-CH=...

    Text Solution

    |

  12. A : Two moles of Grignard reagent is consumed in the formation of ter...

    Text Solution

    |

  13. A : bond angle in ether is slightly greater than normal tetrahedral an...

    Text Solution

    |

  14. A : CH(3)-underset(CH(3))underset(|)overset(CH(3))overset(|)(C)-O-CH...

    Text Solution

    |

  15. A : Ortho - cresol is weaker acidic than meta-cresol . R : It is d...

    Text Solution

    |

  16. A : Among all ortho halophenol , fluorophenol is least acidic . R ...

    Text Solution

    |

  17. A : In esterification reaction alcohol act as nucleophile . R : ...

    Text Solution

    |

  18. A : Phenol is manufactured by Dow 's pocess. R : It involves the ...

    Text Solution

    |

  19. A : Primary alcohol is prepared by the reaction of primary amine with ...

    Text Solution

    |

  20. A : The reactivity order of alcohols is 1^(@) gt 2^(@) gt 3^(@) for ...

    Text Solution

    |

  21. A : The dehydration of ethyl alcohol in presence of Al(2)O(3) at 633 ...

    Text Solution

    |