BIGBOS777 LINK SLOT NO FURTHER A MYSTERY

In Mendeleev's 1871 periodic table, copper, silver, and gold are detailed 2 times, the moment less than group VIII (While using the iron triad and platinum group metals), and the moment under team IB. Group IB was However parenthesised to note that it had been tentative. Mendeleev's principal criterion for group assignment was the maximum oxidation