2. Free Ncert Solutions
  3. 9th Class
  4. Science
  5. Atoms and Molecules

9th Class Science Atoms and Molecules

  • question_answer 10)
    How many atoms are present in a                                             (i) H2S molecule and    (ii) PO43- ion?                                               

    Answer:

    (i) 3 atoms because H2S molecule has two atoms of hydrogen and one atom of sulphur. (ii) 5 atoms because PO43-   ion has one atom of phosphorus and four atoms of oxygen.  


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