anus928
发表于 2025-3-30 10:05:40
Erwin W. Hans,Peter T. Vanberkele of the Karlsruhe Conference in 1860, it was clear that atomic weight was likely the key to creating an organizational scheme that could encompass most, if not all, of the elements rather than small groupings. When Dmitri Mendeleev developed his periodic law in 1869, others had already created syst