26. How many of the following has a bond order = 0.5? (A) 2(B) 3 (C)4 (D) 1 (E)0

26. How many of the following has a bond order = 0.5?
(A) 2
(B) 3
(C)4
(D) 1
(E)0

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統計： A(7), B(0), C(0), D(3), E(0) #2735929

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B1 · 2023/10/11

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29. A certain substance, X, has a triple-point temperature of 20℃ at a pressure of 2.0 atm. Which one of the following statements cannot possibly be true? (A) X can exist as a liquid above 20℃ (B) both liquid and solid X have the same vapor pressure at 20℃ (C) liquid X can exist as a stable phase at 25℃ , 1 atm (D) X can exist as a solid above 20℃ (E) all of these statements could be true

26. How many of the following has a bond order = 0.5?
(A) 2
(B) 3
(C)4
(D) 1
(E)0

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