4
Question Question 4
How many atoms are present in a
(i) H2S molecule and
(ii) PO43- ion ?
(i) In one molecule of H2S, 2 atoms of hydrogen and 1 atom of sulphur are present. Hence, 3 atoms in total are present.
(ii) In one ion [PO43-], 1 atom of phosphorus and 4 atoms of oxygen are present. Hence, 5 atoms in total are present.