Question

Give reason for these noble metals? (1)ruthenium,(2)rhodium (3)palladium (4)sliver (5) osmium

Answer 1

The term noble metal can be traced back to at least the late 14th century[6] and has slightly different meanings in different fields of study and application. Only in atomic physics is there a strict definition, which includes only copper, silver, and gold, because they have completely filled d-subshells.