Question

limitations of mendlew table​

Answer 1

drawback or limitations of mandeleev periodic table are as follows

# position of a hydrogen not confirmed

# isotopes were not includes

# cobalt placed before nickel

# vanodium placed before chromium


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Answer 2

.No fixed position for hydrogen

.isotopes had become a challenge for his periodic law

.another was atomic masses do not increase in regular manners

.so it was not possible to predict how many elements could be discovered between two elements when we consider heavier elements

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