Define Biogenetic law.

Define modern periodic law. How is the long form of the periodic table constructed on the basis of this law?

Define rate law . How is it related to the stoichiometric equation and experimental result ?

Define Raoult's law for lowering of vapour pressure. How is the law useful in determining the molecular weight of a solvent when a known non - volatile solute is dissolved ?

Define Modern periodic law? Why many groups and periods are present in the long form of the periodic table?