how does modern periodic law differs from mendleev periodic law? explain any two defects of mendleevs periodic table which were overcome in the modern periodic table
Answers
Answer:
Explanation:
The major difference is that the elements in Mendeleev's periodic table were arranged by atomic mass and the modern periodic table arranges elements by atomic number.
1 position of hydrogen was not confirmed
2 element with a slightly higher atomic mass was placed before an element of lower atomic mass.
These defects were overcome in the modern periodic table
Answer:
As per Mendeleev's Periodic Law, the physical and chemical properties of the elements are a periodic function of their atomic weight. Modern Periodic Law the physical and chemical properties of the elements are a periodic function of their atomic number.
Defects
- position of hydrogen was not confirmed
- element with a slightly higher atomic mass was placed before an element of lower atomic mass.
- it doesn't explain the electronic arrangement of elements.
These defects were overcome in the modern periodic table
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