The pure form of an atom present in a sample is called the element. No, elements are not always the product of the decomposition reaction.
Decomposition is a chemical reaction in which the compound or the molecule breaks to produce two or more products. The general reaction can be given as,
[tex]\rm XY \rightarrow X+ Y[/tex]
And,
[tex]\rm compound \rightarrow element + element[/tex]
The splitting of metal hydroxide into the water and metal oxide is an example of a decomposition reaction. Elements can be found in the free state.
Therefore, the statement is incorrect.
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