Gold, purple
Purple gold
Roberts-Austen alloy
Al 21%, Au 79%,

% composition % 
Real, long lived, electronically neutral reagent chemical.

Melting point = 750 °C

Purple gold
is defined with respect to the entities below:
The entities below are defined with respect to:
Purple gold
Alloy (generic)

Mono-bond type material (generic)

chemical compound molecule metal molecular science reaction mechanism ionic material acid base geometry reactivity synthesis science knowledge chemistry Lewis