Question 19M.2.SL.TZ2.b(i)
| Date | May 2019 | Marks available | [Maximum mark: 2] | Reference code | 19M.2.SL.TZ2.b(i) |
| Level | SL | Paper | 2 | Time zone | TZ2 |
| Command term | Suggest | Question number | b(i) | Adapted from | N/A |
Suggest the basis of these predictions.
[2]
gap in the periodic table
OR
element with atomic number «75» unknown
OR
break/irregularity in periodic trends [✔]
«periodic table shows» regular/periodic trends «in properties» [✔]
This is a NOS question which required some reflection on the full meaning of the periodic table and the wealth of information contained in it. But very few candidates understood that they were being asked to explain periodicity and the concept behind the periodic table, which they actually apply all the time. Some were able to explain the “gap” idea and other based predictions on properties of nearby elements instead of thinking of periodic trends. A fair number of students listed properties of transition metals in general.
