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Monday, July 26, 2021

Structure of Black phosphorus:

(1) Black phosphorous  is thermodynamically most stable allotropes of phosphorous.

(2) It exist in the form of hexagonal layers like graphite.

(3) It is less reactive and has maximum density.

(4) It is conductor of electricity like graphite.

(5) It has two form alpha Black phosphorous and Beta Black phosphorous.

(6) Alpha Black phosphorous is formed when red phosphorous is heated in a sealed tube at 803 K. It can be sublimed in air and has opaque Monoclinic or rhombohedral crystal. It does not oxidized in air.

(7) Black phosphorous exist as solid of high density.

(8) The order of stability:

                         Black (P) > Red (P) > White (P)

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