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NEETChemistryp Block Elements (Group 15, 16, 17 & 18)

How is α-black phosphorus formed?

Options

  1. ABy heating white phosphorus at 573K in an inert atmosphere
  2. BBy subliming red phosphorus
  3. CBy heating red phosphorus in a sealed tube at 803K
  4. DBy exposing red phosphorus to sunlight

Correct answer

C. By heating red phosphorus in a sealed tube at 803K

Step-by-step solution

The paragraph states that α-black phosphorus is formed when red phosphorus is heated in a sealed tube at 803K.

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