Question

State mendeleev's periodic law. write two achievements of mendeleev's periodic table

Answer 1

The chemical and physical property of an element is a periodic function of their atomic mass.

mendeleev periodic law achievements are:

1. Mendeleev make the place for noble gas without disturbing other elements.
2. Mendeleev has correct the atomic mass of beryllium which was wrong.

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Answer 2

Answer:

State Mendeleev’s periodic law. Write two achievements of Mendeleev’s periodic table.

Mendeleev’s Periodic Law: ‘Properties of elements are the periodic function of their atomic masses.’

Achievements:

(i) It could classify all the elements discovered at that time.

(ii) It helped in the discovery of new elements.

(iii) it helped in the correction of the atomic mass of some elements.

Explanation: