Gurmeet singh Asked a Question
November 9, 2020 3:29 pmpts 30 pts
A five-fold axis of symmetry is present in: A Quartz C. Tourmaline B. Riebeckite D. None of these (BHU-2010)
  • 2 Answer(s)
  • like-1
  • Shares
  • Sajan sarthak sahoo Best Answer
    5 fold generally doesn't exist Quartz hexagonal system crystallization so 6 fold. tourmaline also 6 fold , and ribeckite monoclinic so 1 fold
    Likes(0) Reply(0)
  • Rahul pandey thankyou
    Answer (D) None of these Five fold axis of symmetry doesn't exist in any crystal because five fold axis of symmetry can't produce a complete crystal lattice upon repetition. In na...
    Show more
    Likes(1) Reply(0)