Chemistry, asked by hvygygkymguhytyf, 11 months ago

Limitation and properties of mendeleev periodic table

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Answered by KINGAP

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Answered by mlrathour1978

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LIMITATIONS OF Mendeleev's Periodic Table :

Position of Hydrogen => Position of hydrogen in the perodic table is Uncertain , Because hydrogen is placed in 1 A group with Alkali metals .

Position of isotopes => isotopes haven't been given separate place in perodic table .

Cause of periodicity => Mendeleev could not explain the cause of periodicity .

Separation of similar elements => some dissimilar elements have been placed together .

Mendeleev arranged the elements in horizontal rows (known as periods) in the increasing order of their atomic masses. Each vertical column (called groups) contained elements of similar properties. The main features of Mendeleev's periodic table are: Groups and sub-groups:

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