This page is about the meanings of the acronym/abbreviation/shorthand CTA in the Governmental field in general and in the FBI Files terminology in particular. Control Terminal Agency. Governmental Â» FBI Files. Rate it: (1.40 / 5 votes)
So the two scientists would certainly have known each other although neither was aware of all the work done by the other. Meyer's roots, however, were firmly in Germany. Meyer was just four years older than Mendeleev, and produced several Periodic Tables between 1864-1870.His first table contained just 28 elements, organised by their valency (how many other atoms they can combine with).These elements were almost entirely main group elements, but in 1868 he incorporated the transition metals in a much more developed table.o the two scientists would certainly have known each other although neither was aware of all the work done by the other. Meyer's roots, however, were firmly in Germany. Meyer was just four years older than Mendeleev, and produced several Periodic Tables between 1864-1870.
History of the Periodic Table. The Periodic Table of Elements is a chart created by Dmitri Mendeleev in 1869 to help organize the elements that had been discovered at that time. First we have to understand what an element is. All matter is made up of elements, which are substances with only one type of atom. They have the same number of neutrons, protons, and electrons. If you alter the number of the neutrons, protons, or electrons for any element an isotope is created.