CBSE  /  Class 10  /  Science  /  Periodic Classification of Elements

  • 1. 
    Where would you locate the element with electronic configuration 2, 8 in the Modern Periodic Table?

  • Group 8
  • Group 18
  • Group 10
  • Group 16

  • 2. 
    Which of the following is the valance shell for the elements of second period of the modern periodic table?

  • M shell
  • K shell
  • L shell
  • N shell

  • 3. 
    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?

  • The elements becomes less metallic in nature
  • The number of valance electrons increases
  • The atoms lose their electrons more easily
  • The oxides become more acidic

  • 4. 
    The longest period of the Modern Periodic Table is period.

  • first
  • second
  • fourth

  • sixth

  • 5. 
    The inert gas which lies in third period is

  • Helium
  • Neon
  • Argon
  • Xenon

  • 6. 
    An element with atomic number 40 is placed in period.

  • 5
  • 6
  • 4
  • 3

  • 7. 
    The total number of electrons present in the first twenty elements of the periodic table is

  • 250
  • 230
  • 210
  • 190

  • 8. 
    The element with atomic number 26 will be found in group

  • 2
  • 8
  • 6
  • 10

  • 9. 
    Eka-aluminium and Eka-silicon are known as

  • gallium and germanium
  • aluminium and silicon
  • iron and sulphur
  • neutron and proton

  • 10. 
    When an atom of iodine becomes an iodine ion (I

  • decrease
  • increase
  • remain the same
  • none
Report Question
warning
Practice More On Periodic Classification of Elements
Quiz 1 Quiz 2 Quiz 3 Quiz 4 Quiz 5
access_time
  Time