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From which type of phosphorus is alpha -black phosphorus formed?(a) Phosphide(b) White phosphorus(c) Black phosphorus(d) Red phosphorusThe question was asked in an online quiz.This intriguing question originated from P-Block Elements topic in section P-Block Elements of Chemistry – Class 12

Answer»

Correct answer is (d) Red PHOSPHORUS

The explanation: Alpha-black phosphorus is the most STABLE ALLOTROPE of black phosphorus. Alpha-black phosphorus is produced from red phosphorus. When red phosphorus is HEATED in a sealed tube at 803 K, it forms alpha-black phosphorus.



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