Question

mandeelev limitation
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Answer 1

Answer:

This is because hydrogen's characteristics are very similar to halogens and alkali metals. Other key limitations in Mendeleev periodic table were that the atomic number in the table was not shown increasing in a regular pattern and the symmetry of the table was also disturbed.

Explanation:

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Answer 2

Answer:

Elements having different properties were placed in the same group. 3. Isotopes were discovered long time after Mendeleev put forth the periodic table. As isotopes have the same chemical properties but different atomic masses, a challenge was posed in placing them in Mendeleev's periodic