{^file Coinage metals: authors vary on whether roentgenium (Rg) is considered a coinage metal. It's in group 11, like another coinage metals, and is expected to become chemically much like gold.
These examples are from corpora and from resources on the internet. Any opinions from the examples do not stand for the impression from the Cambridge Dictionary editors or of Cambridge College Press or its licensors.
He initial attended a navy college or university, but left group it on account of his membership to the leftist group during the late forties.