Question 18
State the number of atoms present in each of the following chemical Species
(a) CO2−3
(b) PO3−4
(c) P2O5
(d) CO
(a)CO2−3: 4 (1 Carbon + 3 Oxygen ).
(b)PO3−4: 5 (1 Phosphorus + 4 Oxygen ).
(c)P2O5: 7 (2 Phosphorus + 5 Oxygen ).
(d)CO: 2 (1 Carbon + 1 Oxygen ).