Multiple choice

Which of the following is a hexagonal allotrope of the carbon ?

  1. Linear acetylenic carbon

  2. Lonsdaleite

  3. Carbon nanofoam

  4. Carbene
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Lonsdaleite is a hexagonal allotrope of the carbon allotrope diamond, believed to form from graphite present in meteorites upon their impact to Earth. The great heat and stress of the impact transforms the graphite into diamond, but retains graphite's hexagonal crystal lattice.

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