The plutonium pits of nuclear weapons employ an alloy with gallium to stabilize the allotropes of plutonium. |
Two allotropes of the element exist, accounting for the slight variation in densities. |
Each of these allotropes of phosphorous also has its own subset of forms. |
The presence of these many allotropes makes machining plutonium very difficult, as it changes state very readily. |
It is the interaction of the allotropes of iron with the alloying elements, primarily carbon, that gives steel and cast iron their range of unique properties. |
Among different forms of carbon, graphene is one of the widely studied allotropes. |