| http://www.w3.org/ns/prov#value | - Third, most of these elements dissolve in mineral acids, although a few, such as platinum, silver, and gold, are called ???noble??????that is, are unaffected by simple (nonoxidizing) acids.Without exception, the elements of the main transition series (i.e., excluding the lanthanoids and actinoids as specified below) form stable compounds in two or more formal oxidation states.The transition elemen
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