{^f Coinage metals: authors differ on no matter if roentgenium (Rg) is taken into account a coinage metallic. It is actually in group eleven, like one other coinage metals, and is predicted to generally be chemically similar to gold.
maths a set that has an related operation that combines any two associates from the set to provide Yet another member and that also consists of an identity component and an inverse for each component
Arithmetic. an algebraic process that may be shut under an associative Procedure, as multiplication or addition, and in which There's an identity component that, on working on Yet another factor, leaves the next factor unchanged, and through which Every single factor has comparable to it a singular factor that, on running on the primary, leads to API서비스 the identification component.