I´m doing a little research on allotropic materials and decided to go with phosphorus... I chose white beta phosphorus, black phosphorus and red phosphorus. first question: since red phosphorus is not a crystalline solid but an amorphous solid, would you include it as an allotrope? second question: where can I find about the electrical properties of the different allotropes I´ve chosen? I could only find their magnetic susceptibility and the band gap for black phosphorus but couldn´t find anything else on the other two. I´d appreciate links or websites that could help me with this, thanks!