CBSE Class 12-science Answered
what is alpha and beta black phosphorous ?what is their difference between them?
Asked by madhumitha.pavith93 | 30 Aug, 2010, 12:00: AM
Expert Answer
Black phosphorus has two forms α-black phosphorus and β-black phosphorus. α-Black phosphorus is formed when red phosphorus is heated in a sealed tube at 803K. It can be sublimed in air and has opaque monoclinic or rhombohedral crystals. It does not oxidise in air. β-Black phosphorus is prepared by heating white phosphorus at 473 K under high pressure. It does not burn in air upto 673 K.
Answered by | 31 Aug, 2010, 09:41: PM
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