Periodic Classification Of Elements - Paper I

10 Questions | Total Attempts: 4257

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Periodic Classification Of Elements - Paper I

To identify the various trends in groups and periods To compare the traditional and modern methods of classification


Questions and Answers
  • 1. 
    The electronic configuration of the atom of an element  X is 2 , 8, 4 .In the modern periodic table , the element X is placed in :
    • A. 

      2 nd group

    • B. 

      4 th group

    • C. 

      14th group

    • D. 

      8th group

  • 2. 
    Which of the following element would lose an electron easily ?
    • A. 

      Mg

    • B. 

      Na

    • C. 

      K

    • D. 

      Ca

  • 3. 
    The elements A, B, C, D and E have atomic numbers 9, 11 , 17,12, and 13 respectively . The pair of elements which belongs to the same group of the periodic table is :
    • A. 

      A & B

    • B. 

      B & D

    • C. 

      A & C

    • D. 

      D & E

  • 4. 
    Which one of the following does not increase while moving down the group of the periodic table ?
    • A. 

      Atomic radius

    • B. 

      Metallic character

    • C. 

      Valence electrons

    • D. 

      Shells in the atoms

  • 5. 
    The Newlands Law of Octaves for the classification of elements was found to be applicable only up to the element :
    • A. 

      Potassium

    • B. 

      Calcium

    • C. 

      Cobalt

    • D. 

      Thorium

  • 6. 
    An element  X  forms an oxide X2O3  . In which group of Modern periodic table is this element placed?  
    • A. 

      Group 2

    • B. 

      Group 3

    • C. 

      Group 5

    • D. 

      Group 13

  • 7. 
    The atomic numbers of the elements  Na,  Mg, K and Ca are 11, 12, 19, and 20 respectively. The element having the largest atomic radius is :
    • A. 

      Mg

    • B. 

      Na

    • C. 

      K

    • D. 

      Ca

  • 8. 
    Where  would you locate the element with electronic configuration 2, 8 in the modern periodic table ?
    • A. 

      Group 8

    • B. 

      Group 18

    • C. 

      Group 10

    • D. 

      Group 16

  • 9. 
    Which of the following is the valence shell for the elements of second period of the modern periodic table ?
    • A. 

      M shell

    • B. 

      K shell

    • C. 

      L shell

    • D. 

      N shell

  • 10. 
    Which of the following statements is not a correct statement about the trends when going from left to right across the periods of the periodic table ?
    • A. 

      The elements become less metallic in nature

    • B. 

      The number of valence electrons increases

    • C. 

      The atoms lose their electrons more easily

    • D. 

      The oxides become more acidic

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