In this topic,Student should be able to :
Describe and explain the variation in the properties of group II and VII elements from top to bottom with special emphasis on:
a) Reactions of group-II elements with oxygen and water.
b) Properties of halogens and uses of chlorine in water purification and as bleaching agent.
c) Reaction of chlorine with sodium hydroxide (disproportionation reactions of chlorine).
d) Uses of Nobel gases (group VIII)./p>