merits and demerits of mendeleev's periodic table at least 4 points in both
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Merits
- he make eight groups
- he predict the properties of undiscovered elements
- he had left the gaps for the undiscovered elements
- he correct the atomic mass of some elements like gold
Demerits
- he did the abnormal pairing
- isotopes were not given special place
- hydrogen was not given a fixed position
- he doesn't explain the electron arrangement
- he make eight groups
- he predict the properties of undiscovered elements
- he had left the gaps for the undiscovered elements
- he correct the atomic mass of some elements like gold
Demerits
- he did the abnormal pairing
- isotopes were not given special place
- hydrogen was not given a fixed position
- he doesn't explain the electron arrangement
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