Date | November 2014 | Marks available | 1 | Reference code | 14N.1.sl.TZ0.5 |
Level | SL | Paper | 1 | Time zone | TZ0 |
Command term | Question number | 5 | Adapted from | N/A |
Question
Which ion will show the least deflection in a mass spectrometer?
A. \(^{{\text{35}}}{\text{C}}{{\text{l}}^ + }\)
B. \(^{{\text{35}}}{\text{C}}{{\text{l}}^{2 + }}\)
C. \(^{{\text{35}}}{\text{C}}{{\text{l}}^{{\text{35}}}}{\text{C}}{{\text{l}}^ + }\)
D. \(^{{\text{35}}}{\text{C}}{{\text{l}}^{{\text{37}}}}{\text{C}}{{\text{l}}^ + }\)
Markscheme
D
Examiners report
We recognize that students might have found the molecular ions confusing. The question was answered correctly by 49.8% of the candidates and the question discriminated well (0.48). This is an example of a question set to discriminate the higher-grade candidates.
Syllabus sections
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