28. Which of the following is paramagnetic?
(A)
(B)
(C) O₂ ;
(D) N₂. ;
(E) At least two of these are paramagnetic.

阿摩線上測驗 · 2025-08-05T00:53:43+08:00

28. Which of the following is paramagnetic? (A) (B) (C) O2 ; (D) N2. ; (E) At least two of these are paramagnetic.

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