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1. Which pair of the molecule and point group is correct? (A) CH2Cl2, Td (B) CHC13, C3v (C) CCl4,D4d (D) CCl2Br2,C2h

2. An Oh XY6 molecule exhibits two Tru, IR active modes. Which statement is true? (A) Each Tiu mode is triply degenerate, and each gives rise to one absorption in the IR spectrum of XY6  (B) Each Tiu mode is triply degenerate, and each gives rise to three absorptions in the IR spectrum of XY6 (C) Each Tlu mode is non-degenerate, and gives rise to one absorption in the IR spectrum of XY6 (D) One of the Tiu modes is the symmetric stretching mode of XY6

3. Elemental analytical data for a new, monomeric compound X is a requirement of publishing details of the compound in the literature, even when crystallographic and spectroscopic data are available. This is because: (A) elemental analysis is a requirement purely for historical reasons (B) elemental analysis is the only method of confirming that the compound contains no solvate (C) elemental analysis confirms the composition of the bulk sample (D) elemental analysis confirms that the compound is a monomer and not a dimer or higher oligomer

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110年 - [非官方正解]TOEIC︰Chapter 3 Preposition#96873

110年 - [非官方正解]TOEIC︰Chapter 10 Parallelism and Redundancy#96872

110年 - [非官方正解]TOEIC︰Chapter 5 Agreement#96871

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