Question

Write short notes on :
Lother Meyer's curve.

Answer 1

Lothar Meyer’s Atomic Volume Curve:

Lothar Meyer a German chemist plotted a graph between atomic weight and atomic volume (i.e. atomic weight in solid state/density) and he find out that elements with similar properties occupied the similar positions on the graph. Strong electropositive elements of IA group except Li i.e. Na, K, Rb, Cs etc. occupied the top position on the graph. IIa group elements like Be, Mg, Ca, Sr, Ba etc. occupied the positions on the ascending part of the graph. Inert gases except He occupied the positions on the descending part of the graph. Halogens also occupied the descending part of the graph.