BIGBOS777 NO FURTHER A MYSTERY

In Mendeleev's 1871 periodic desk, copper, silver, and gold are listed 2 times, the moment less than group VIII (Together with the iron triad and platinum group metals), and the moment below group IB. Team IB was nonetheless parenthesised to notice that it was tentative. Mendeleev's primary criterion for team assignment was the utmost oxidation sta