CLASS XII CHEMISTRY

LOATHER MEYER'S CONCEPT

In 1869 Loather Meyer , a German Chemist plotted the atomic volumes of elements against their atomic weights and found different curves . He observed that :

" Elements with similar physical properties occupied similar position in the curve " .

Loather Meyer concluded from this curve that :

" Physical properties of elements are periodic function of their atomic weights ".

 

DISADVANTAGES OF LOATHER MEYER'S CLASSIFICATION :

1 -The periodic classification is incomplete as compared to Mendeleev  periodic table which shows the remarkable prediction of discoveries of certain elements.

2 -Meyer's classification based on the physical properties related with atomic weights only.There is no empirical or logical basis for classification as found as that in Mendeleev periodic classification.