The elements which are the most widely diffused have small atomic weights. Dmitri Mendeleev
The elements which are the most widely diffused have small atomic weights.
Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs). Dmitri Mendeleev
Elements which are similar as regards their chemical properties have atomic weights which are either of nearly the same value (eg. Pt, Ir, Os) or which increase regularly (eg. K, Ru, Cs).
The elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties. Dmitri Mendeleev
The elements, if arranged according to their atomic weights, exhibit an apparent periodicity of properties.
Certain characteristic properties of elements can be foretold from their atomic weights. Dmitri Mendeleev
Certain characteristic properties of elements can be foretold from their atomic weights.
That our being should consist of two fundamental elements [physical and psychical] offers I suppose no greater inherent improbability than that it should rest on one only. Charles Scott Sherrington
That our being should consist of two fundamental elements [physical and psychical] offers I suppose no greater inherent improbability than that it should rest on one only.