What will be the atomicity of:
a) The molecule which we consume during respiration and released during photosynthesis.
b) The red coloured element which we use in matchboxes.
c) The pale blue gas which forms a layer that absorbs sun's UV radiation.
2, 4, 3 respectively
The elements are Oxygen, Phosphorus and Ozone respectively. So their atomicity is 2, 4, 3 respectively as the Oxygen molecule has 2 atoms each, Ozone molecule has 3 Oxygen atoms combined together and Phosphorus element has 4 Phosphorus atoms combined together.