In Mendeleev's 1871 periodic table, copper, silver, and gold are listed twice, when under team VIII (Together with the iron triad and platinum team metals), and once under team IB. Team IB was Even so parenthesised to notice that it had been tentative. Mendeleev's most important criterion for group assignment https://israelqnjcx.arwebo.com/58277344/the-best-side-of-situs-bigbos777