Which of the following allotropic forms of phosphorus is thermodynamically most stable.
Which of the following allotropic forms of phosphorus is thermodynamically most stable.
White phosphorus
Black phosphorus
Red phosphorus
All are equally stable
Solution
The lattice of black phosphorus is an interlinked six-membered ring in which each atom is bonded to three other atoms. Thus, the reactivity of black phosphorus is very less. Being most stable, black phosphorus is less reactive in nature. Thus, the most thermodynamically stable allotropic form of phosphorus is black.