Question

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> Arrange the following molecules in the increasing order of their atomicity.
Chlorine, Oxygen, Sulphur, Phosphorus, Helium, Neon, Argon, Ozone, Hydrogen, Fluorine.

Answer 1

<!--td {border: 1px solid #ccc;}br {mso-data-placement:same-cell;}--> The number of atoms present in a molecule of an element is called its atomicity.
The correct order will be:
Helium = Neon = Argon < Oxygen = Chlorine = Hydrogen = Fluorine < Ozone < Phosphorus < Sulphur.