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

Q.:- 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.