Explain the limiation of Mendeeff's ...

Explain the limiation of Mendeeff's periodic table .

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1) Amomalous pair of elements : certain elements of highest atomic weights preccede those with lower atomic weights .
Ex : Tellurium (At wt .127 preccedes Iodine ( at . Wt . 126 .9 ) .
2) Dissimailar elements placed together : Elements with dissimilar properties were placed in same group as sub - group A and sub - group B .
Ex : 1) Alkali metals like Li,Na, K etc. of 1A group have resmblance with image metal like Cu ,Ag , Au of IB group .
2) Cl is of VIIA group and 'Mn ' is of VIIB . But chlorine is a non - metal where Mn is a metal .

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Explain the limiation of Mendeeff's periodic table .

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