DP Chemistry (first assessment 2025)
Question 21N.2.SL.TZ0.9b(i)
| Date | November 2021 | Marks available | [Maximum mark: 2] | Reference code | 21N.2.SL.TZ0.9b(i) |
| Level | SL | Paper | 2 | Time zone | TZ0 |
| Command term | Sketch | Question number | b(i) | Adapted from | N/A |
b(i).
[Maximum mark: 2]
21N.2.SL.TZ0.9b(i)
(b(i))
Subsequent experiments showed electrons existing in energy levels occupying various orbital shapes.
Sketch diagrams of 1s, 2s and 2p.
[2]
Markscheme
1s AND 2s as spheres ✔
one or more 2p orbital(s) as figure(s) of 8 shape(s) of any orientation (px, py pz) ✔
Syllabus sections
Structure 1. Models of the particulate nature of matter » Structure 1.3—Electron configurations » Structure 1.3.4—Detailed model of the atom. A more detailed model of the atom describes the division of the main energy level into s, p, d and f sublevels of successively higher energies. Recognize the shape and orientation of an s atomic orbital and the three p atomic orbitals.