SINCE Moseley's discovery of the fundamental laws of the X-ray emission, it has become quite clear that the most simple and conclusive characteristic of a Chemical element is given by its X-ray ...

It has an atomic number of 32, an atomic weight of 72.59, and a density of 5.32 Mg/m 3. Its melting temperature is 937.4 C. The electronic configuration of germanium is (Ar)(3d) 10 (4s) 2 (4p) 2 and ...

A breakthrough occurred in 1913, when Henry Moseley, a British physicist, showed that elements could be arranged by their atomic number, or their number of protons.