Actinides

A

are all synthetic elements

B

includes element 104

C

have only short lived isotopes

D

have variable valency.

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE ENGLISH|Exercise Exercise 2|40 Videos

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE ENGLISH|Exercise Exercise 3|65 Videos

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE ENGLISH|Exercise Match the column|1 Videos

  • CHEMICAL EQUILIBRIUM

    RESONANCE ENGLISH|Exercise Advanced Level Problems (Part-3)(Stage-5)|2 Videos

  • GASEOUS STATE

    RESONANCE ENGLISH|Exercise ORGANIC CHEMISTRY(Hydrocarbon)|18 Videos

Similar Questions

Explore conceptually related problems

What is the position of lanthanide and actinide series in the periodic table ?

Which of the following element belong to actinide series ?

If the highest oxidation states shown by any Lanthanide and any Actinide are +X and+Y , the sum of X+Y is euqal to?

Which of the following is not an actinide ?

Explain the following: (i) Why argon (atomic mass = 39.94) has been placed before potassium (atomic mass = 39.10) in the Modern periodic table? (ii) There are only 14 anthanides and only 14 actinides in Modern peridoic table.

What were the main demerits of Mendeleev's periodic table? (i)Hydrogen has been places in group I though it resembles to group VII as well (ii)Position of some elements was not justified (iii)Isotopes were not given separate places. (iv)Lanthanides and actinides were not included in the table.

RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Exercise 1
  1. KMnO(4) is the oxo salt of :

    Text Solution

    |

  2. The solubility of silver bromide in hypo solution (excess) is due to ...

    Text Solution

    |

  3. In dilute alkaline solution,MnO(4)^(-) changes to:

    Text Solution

    |

  4. Cl(2) gas is obtained by various reactions but not by:

    Text Solution

    |

  5. The developer used in photography is an alkaline solution of:

    Text Solution

    |

  6. When acidified solution of K(2)Cr(2)O(7) is shaken with aqeous solutio...

    Text Solution

    |

  7. Which of the following compounds is used as the starting material for ...

    Text Solution

    |

  8. CrO(4) dissolves in aqueous NaOH to give :

    Text Solution

    |

  9. The final product obtained for the following reaction is: KMnO(4)("ex...

    Text Solution

    |

  10. The f-block of the periodic table contains those elements in which:

    Text Solution

    |

  11. Among the lanthanides the one obtained by synthetic method is (a)Lu ...

    Text Solution

    |

  12. The most common lanthanoid is

    Text Solution

    |

  13. Across the lanthanide series,the basicity of the lanthanoide hydroxide...

    Text Solution

    |

  14. Actinides

    Text Solution

    |

  15. The lanthanide contraction is responsible for the fact that

    Text Solution

    |

  16. Lanthanides and actinides resemble in

    Text Solution

    |

  17. The seperation of lanthanoids by ion exchange method is based on

    Text Solution

    |

  18. Match the salts/mixtrues listed in column(I) with their respective nam...

    Text Solution

    |

  19. Thermal decomposition of K2Cr2O7 produces:

    Text Solution

    |

  20. Match the compounds listed in column I with characteristics type of re...

    Text Solution

    |