Question.
How many atoms are present in a
(i) $\mathrm{H}_{2} \mathrm{~S}$ molecule and
(ii) $\mathrm{PO}_{4}^{3}$ ion?
How many atoms are present in a
(i) $\mathrm{H}_{2} \mathrm{~S}$ molecule and
(ii) $\mathrm{PO}_{4}^{3}$ ion?
Solution:
(i) In a $\mathrm{H}_{2} \mathrm{~S}$ molecule, three atoms are present; two of hydrogen and one of sulphur.
(ii) In a $\mathrm{PO}_{4}^{3-}$ ion, five atoms are present; one of phosphorus and four of oxygen
(i) In a $\mathrm{H}_{2} \mathrm{~S}$ molecule, three atoms are present; two of hydrogen and one of sulphur.
(ii) In a $\mathrm{PO}_{4}^{3-}$ ion, five atoms are present; one of phosphorus and four of oxygen