2. Questions Bank
  3. 9th Class
  4. Science
  5. Structure of the Atom

9th Class Science Structure of the Atom Question Bank Structure of the Atom

  • question_answer
    The total number of electrons in a nitrogen atom and a chlorine atom are \[7\] and \[17\] respectively. Find the number of valence electrons in them.

    A) \[3,\,\,1\]                       

    B)        \[5,\,\,8\]

    C) \[4,\,\,1\]                       

    D)        \[5,\,\,7\]  

    Correct Answer: D

    Solution :

     Nitrogen\[(7)\,\,2,\,\,5\], Chlorine\[(17)\,\,2,\,\,8,\,\,7\] The number of valence electrons in both are \[5\] and \[7\] respectively.


You need to login to perform this action.
You will be redirected in 3 sec spinner