Lighter example sentences

Are there seeds which float on water? Would those be lighter or heavier than those which sink? Why would they be lighter? Damaged seeds become hollow and are thus lighter.Why is it so? Recall that oil and gas are lighter than water and do not mix with it.The important oxidation states exhibited by p-block elements are shown in Table 1 In boron, carbon and nitrogen families the group oxidation state is the most stable state for the lighter elements in the group.They are lighter than water and immiscible with water but soluble in organic solvents like ethers, carbon tetrachloride and benzene.These films are good conductors, lighter and cheaper than the metal conductors.