What are the limitations of mendeleeve's …

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What are the limitations of mendeleeve's periodic table?

Posted by Oav Papadahandi 4 years, 8 months ago

CBSE > Class 10 > Science

5 answers

Nithyashree Suresh Babu 4 years, 8 months ago

According to NCERT Book... 1. No fixed position can be given to hydrogen in the periodic table. 2. The atomic masses don't increase in a regular manner in going from one element to the next. 3. It was not possible to predict how many elements could be discovered between two elements-especially when we take heavier elements.

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Oav Papadahandi 4 years, 8 months ago

Send the answer of 2nd question

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Oav Papadahandi 4 years, 8 months ago

Thanks khusi?

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Khushi 4 years, 8 months ago

Limitations of Mendeleev’s periodic table: ✿Elements with large difference in properties were included in the same group. Eg: Hard metals like copper (Cu) and silver (Ag) were included along with soft metals like sodium (Na) and potassium (K). ✿No proper position could be given to the element hydrogen. Non-metallic hydrogen was placed along with metals like lithium (Li), sodium (Na) and potassium (K). ✿The increasing order of atomic mass was not strictly followed throughout. Eg. Co & Ni, Te &I. ✿No place for isotopes in the periodic table.

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CBSE > Class 10 > Science