Answer :
Answer : The balanced decomposition reaction will be:
[tex]2NH_3(g)\rightarrow N_2(g)+3H_2(g)[/tex]
Explanation:
Balanced chemical reaction : It is defined as the reaction in which the number of atoms of individual elements present on reactant side must be equal to the product side.
Decomposition reaction : It is defined as the reaction in which a large molecule or reactant decomposes to give two or more molecule or products.
As per question, the ammonia molecule decomposes to give nitrogen gas and hydrogen gas as a product.
The balanced decomposition reaction will be:
[tex]2NH_3(g)\rightarrow N_2(g)+3H_2(g)[/tex]