本题目来源于试卷: Models of Matter A.3 Electron Configurations，类别为 IB化学
[单选题]
Which of the following statements is/are true?
|. The emission spectra are produced from a release of energy of excited electrons
||. No two electrons in one atom have the same set of quantum numbers
|||. The electrons in an orbital must have an opposite spin
A. I only
B. II and III only
C. I and II only
D. I, II, and III
参考答案: D
本题详细解析:
Statement I is true because emission spectra are produced when photons are released from excited electrons returning to lower energy levels.
Statement II is true because this is Pauli’s Exclusion principle.
Statement III is also true because it is included in Pauli’s Exclusion principle.
| 
