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

How is β-black phosphorus prepared?

Options

  1. ABy subliming white phosphorus
  2. BBy heating red phosphorus at 573K
  3. CBy heating white phosphorus at 473 K under high pressure
  4. DBy exposing white phosphorus to sunlight

Correct answer

C. By heating white phosphorus at 473 K under high pressure

Step-by-step solution

The paragraph mentions that β-black phosphorus is prepared by heating white phosphorus at 473 K under high pressure.

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