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

What is the reason for the variation in boiling and melting points in Group 15?

Options

  1. ADifferent atomic sizes
  2. BChange in electronic configuration
  3. CPresence of allotropy
  4. DIsotopic composition

Correct answer

C. Presence of allotropy

Step-by-step solution

The paragraph mentions that all the elements in Group 15, except nitrogen, show allotropy, which could contribute to the variation in boiling and melting points.

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