Difference between mendeleev's merit & demerit
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Answer: ☆demerits of mendeleev's
1.position of hydrogen was not defined.
2.position of isotopes were not given.
3.the atomic mass do not increase in regular manner
☆Demerit of mendeleev's
1.no fixed position can be given to hydrogen in the periodic table
2.isotopes of an element have similar chemical properties, but different atomic masses.
3. Isotopes of all elements posed a challange to mendeleev's periodic law.
4.another problem was that the atomic masses do not increase in a regular manner in going from one element to the next.
5.many elements could be discovered between two elements.
Explanation:
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