What are the postulates of mandeleev in the periodic table

mendellevs periodic table states that the properties of elements are the periodic function of their relative atomic masses. mendeleev arranged all 63 elements which were discoverd till his time; in the order of their increasing relative atomic masses in a tabular form. it is known as mendellev periodic table.

Explanation:

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answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.