Home
Class 12
CHEMISTRY
The number of elements known at that tim...

The number of elements known at that time when Mendeleev arranged them in the periodic table was:

A

63

B

60

C

71

D

65

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • PERIODIC TABLE

    MOTION|Exercise Exercise - 2 (Level-I)|20 Videos

  • PERIODIC TABLE

    MOTION|Exercise Exercise - 3 | Level-I|43 Videos

  • PERIODIC TABLE

    MOTION|Exercise Unsolved Example|1 Videos

  • P-BLOCK ELEMENTS

    MOTION|Exercise Exercise - 4 | Level-I Previous Year | JEE Main|37 Videos

  • RADIOACTIVITY

    MOTION|Exercise EXERCISE - 4 LEVEL - II|20 Videos

Similar Questions

Explore conceptually related problems

Which group of elements was not known at the time when Mendeleev created his periodic table ?

The number of elements known when Mendeleef presented periodic table is

Mendeleev Periodic Table

The number of element discovered when Mendeleev proposed his periodic table was

The number of elements in the 4th period of periodic table is

MOTION-PERIODIC TABLE -Exercise - 1
  1. There are 10 neutrons in the nucleus of the element (Z)M^(19) . It bel...

    Text Solution

    |

  2. The number of elements in 5th and 6th period of periodic table are res...

    Text Solution

    |

  3. The number of elements known at that time when Mendeleev arranged them...

    Text Solution

    |

  4. Which of the following is/are Doeberiners triad (i) P, As, Sb " ...

    Text Solution

    |

  5. As applied to periodic table, which of the following sets include only...

    Text Solution

    |

  6. In the general electronic configuration : (n-2)f^(1-14) (n-1)d^(0-1)...

    Text Solution

    |

  7. For Rb(Z = 37), points out the number of electrons present in L and N ...

    Text Solution

    |

  8. Atomic number of Ag is 47. in the same group, the atomic number of ele...

    Text Solution

    |

  9. Atomic number of 15, 33,51 represents the following family:

    Text Solution

    |

  10. The atom having the valence shell electronic configuration 4s^(2) 4p^2...

    Text Solution

    |

  11. The electronic configuration of an element is 1s^(2)2s^(2)2p^(6),3s^(2...

    Text Solution

    |

  12. ""(92)^(238)U(IIIB) changes to ""(9)^(234) Th by emission of alpha- p...

    Text Solution

    |

  13. The correct order of size would be:

    Text Solution

    |

  14. The ionic radii of N^(3-), O^(2-) and F^(-) are respectively given by:

    Text Solution

    |

  15. Match list-I with list-II and select the correct answer using the code...

    Text Solution

    |

  16. The correct order of atomic size of C, N, P, S follows the order ?

    Text Solution

    |

  17. In which of the following compounds, maganese shows maximum adius?

    Text Solution

    |

  18. Arrange in the increasing order of atomic radii of the following eleme...

    Text Solution

    |

  19. Which group of atoms have nearly same atomic radius.

    Text Solution

    |

  20. In the ions P^(3-),S^(2-) and Cl, the increasing order of size is:

    Text Solution

    |