CBSENEETJEEClass 10

What was Mendeleev's periodic table based on?

Answer

Mendeleev's periodic table was based on the increasing atomic masses of elements and the similarity in their physical and chemical properties.

The working

Main basis

Mendeleev arranged the known elements in order of their increasing atomic masses.

Periodic law

He stated that the properties of elements are a periodic function of their atomic masses.

Grouping

Elements with similar properties were placed together in the same vertical column or group.

Special feature

He left gaps for undiscovered elements and predicted their properties, which were later confirmed.

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