DP Chemistry (first assessment 2025)
Question 22M.1A.SL.TZ2.7
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.1A.SL.TZ2.7 |
| Level | SL | Paper | 1A | Time zone | TZ2 |
| Command term | Predict | Question number | 7 | Adapted from | N/A |
7.
[Maximum mark: 1]
22M.1A.SL.TZ2.7
Three elements, X, Y, and Z are in the same period of the periodic table. The relative sizes of their atoms are represented by the diagram.
Which general trends are correct?
[1]
Markscheme
C
Examiners report
The question involved the identification of three trends. 43% of the candidates selected the correct trends in ionization energy, effective nuclear charge and acidity of the oxides. The most commonly chosen distractor reversed the trend in the acidity of the oxides.
Syllabus sections
Structure 3. Classification of matter » Structure 3.1—The periodic table: Classification of elements » Structure 3.1.4—Trends in properties of elements down a group include the increasing metallic character of group 1 elements and decreasing non-metallic character of group 17 elements. Describe and explain the reactions of group 1 metals with water, and of group 17 elements with halide ions.