複選題

27. Which of the following statements is false?
(A) The carbon-carbon bond in is shorter than the one in CH₃CH₃.
(B) The carbon-carbon bond in is stronger than the one in CH₃CH₃.
(C) C₂ is diamagnetic.
(D) C₂ is paramagnetic.
(E) Two of these statements are false.

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