Choose the correct option regarding order and molecularity:

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Comparison Between Order and Molecularity

Molecularity of Reaction Order of Reaction

1 It is defined as the no. of molecules of reactant taking part in a chemical reaction. It is defined as the sum of the power of concentration terms that appear in rate law.

2 It is always a whole number. It can neither be zero nor fractional. It may be zero, fractional or integer.

3 It is defined only for elementary reactions. It is defined for elementary as well as complex reactions.

4 It is a theoretical value. It is an experimental value.

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Choose the option depicting the correct order of molecular mass.

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	Molecularity of Reaction	Order of Reaction
1	It is defined as the no. of molecules of reactant taking part in a chemical reaction.	It is defined as the sum of the power of concentration terms that appear in rate law.
2	It is always a whole number. It can neither be zero nor fractional.	It may be zero, fractional or integer.
3	It is defined only for elementary reactions.	It is defined for elementary as well as complex reactions.
4	It is a theoretical value.	It is an experimental value.