Enumerate four defects in the ‘Mendeleev’s periodic table.
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No position of hydrogen: mendeelev could not hive hydrogen a fixed place
Position of isotope
heavy matel comes brfore light metal
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1. The periodic table which was given by Mendeleev was a defect as per he didn't give the appropriate position of Hydrogen also he didn't defined it properly.
2. The elements which were similar are separated as also dissimilar elements were take place together.
3. He didn't explain the fact of cause of periodicity among the different elements.
4. He also didn't give the separate position of isotopes in the periodic table.
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