Bell metal
Cu 78%, Sn 22%,

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

Melting point = 870 °C
Density = 8.7 g/cm3

Wikipedia Page:

Bell metal
is defined with respect to the entities below:
The entities below are defined with respect to:
Bell metal
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