Question

What were the limitations of Mendeleev's periodic table?

Answer 1

LIMITATIONS OF MEDELEEFF'S PERIODIC TABLE: 1) Anomalous pair of elements:Certain elements of highest atomic weights precede those with lower atomic weights. For example:tellurium (atomic weight 127.6) precedes iodine (atomic weight 126.9). 2) Dissimilar elements placed together:Elements with Dissimilar properties were placed in same group as sub-group A and sub-group B.For example:alkali metal like Li, Na, K etc., of I A group have little resemblance with coinage metals like Cu, Ag, Au of I B group. Cl is one of VII A group and Mn is of VII B, but chlorine is a non metal, whereas Managanese is a metal. Hope this helps you

Answer 2

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✨✔️✔️HERE IS YOUR ANSWER...

✔️ No fixed position was given to hydrogen in periodic table. He could not assign a correct position to hydrogen.
✔️ No proper place was assigned to isotopes of elements.
✔️ Metals and Non-Metals are grouped together.

✨✔️HOPE IT HELPS YOU...

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