4.Which of the following statements is false?
(A)C2 is paramagnetic.
(B)C2 is diamagnetic.
(C)The carbon-carbon bond in 5ec0bf4ab2b30.jpg is stronger than the one in CH3CH3.
(D)The carbon-carbon bond in 5ec0bf571aae3.jpg is shorter than the one in CH3CH3.
(E)none of these.

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統計： A(22), B(6), C(0), D(0), E(0) #2308219