Question

8. Describe two anomalies of Mendeleevs' periodic classification of elements.​

Answer 1

Explanation:

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HERE IS YOUR ANSWER

Mendeleev periodic table is based on atomic weight

there are many demerits of Mendeleev periodic table

1. position of hydrogen is not fixed
2. position of isotopes are not explained eg.CL35 CL37 SHOULD BE PLACE IN DIFFERENT GROUP
3. ANALOGOUS PAIRS OF ELEMENT EG. Ar and Co were placed before K and No
4. lanthanides and actinides are not mentioned as they are placed in 3A or 3B

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