Atomic volume curve

L. Meyer drew up an atomic volume curve and a periodic table, but this laner was not published until 1895. 

Figure 2.1 shows a modem version of Lothar Meyer s atomic volume curve the alkali metals... 

The compressibility of tellurium at 25° C. between 100 and 500 megabars12 is 5-00 x 10-6 per megabar, a value which falls on the smooth compressibility - atomic volume curve for the elements.13... 

Cadmium Arsenides.—The freezing point, density and atomic volume curves indicate the existence of two arsenides, Cd3As2and CdAs2.n The freezing point curve was obtained by cooling mixtures of the elements melted under fused alkali chloride no mixed crystals were observed. Two other arsenides have been described Cd6As, said to... 

Quantum mechanics has shown that periodicity is conditioned by the repetition of the configurations of outer electrons and it is natural that only those properties which are concerned with the structure of the outer electrons of the atoms should reveal periodicity. Thus it is found that ionization potentials, ionic dimensions, polarisation etc when considered as a function of atomic number give a curve similar to the atomic volume curve. Other... 

The atomic volumes (curve a) and heats oi vaporization (curve b) of the lanthanide metals. 

In the same paper he published the first version of his Periodic Table. One year later, Lothar Meyer supported Mendeleev s conclusions in a paper which had an essentially identical table. Meyer s paper contains the famous atomic volume curve showing maxima and minima as the atomic weight increased. 

Figure 4 A modem version of the Lothar Meyer atomic volume curve atomic vOlunes plotted against atomic numbers...

The values may be understood in terms of the cohesive forces operating in the various cases. The basis of the theory is that which is presented in Section 4.3 in the discussion of the atomic volume curve. The forces range from metallic bonding in Groups 1 to 12/13, followed by covalent bonding in the p-block non-metallic elements, to van der Waals forces (London interatomic forces) which operate alone in the Group 18 elements. 

Meyer s atomic volume curve German chemist Julius... 

Atomic volume, defined as the volume in cm, occupied by one gram atomic weight of an element, was shown by Lothar Meyer in 1869 to be a periodic function of the atomic weight (more correctly the atomic numbers). With reference to the atomic volume curve shown below, rationalize the following features on the basis of your knowledge of the electronic structure of atoms. 

It is thus significant that on November 30,1882, Britain s premier scientific society, the Royal Society, awarded the Davy Medal jointly to Mendeleev and Lothar Meyer, not wishing to indicate sole primacy of discovery of the periodic law. The president (mathematician William Spottiswoode) spoke of how the labors of Mendeleev and Lothar Meyer had extended our knowledge of the relations between the atomic weights of the elements and their respective chemical and physical properties, and atomic volume curves (Fig. 4.3). ... 

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