DP Chemistry (first assessment 2025)
Question 22M.2.SL.TZ1.1e(i)
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.2.SL.TZ1.1e(i) |
| Level | SL | Paper | 2 | Time zone | TZ1 |
| Command term | State | Question number | e(i) | Adapted from | N/A |
e(i).
[Maximum mark: 1]
22M.2.SL.TZ1.1e(i)
(e(i))
State the number of subatomic particles in this ion.
[1]
Markscheme
Protons: 7 AND Neutrons: 7 AND Electrons: 10 ✔
Examiners report
Most candidates could answer the question about subatomic particles correctly.
Syllabus sections
Structure 1. Models of the particulate nature of matter » Structure 1.2—The nuclear atom » Structure 1.2.1 - Atoms and negatively charged electrons. Atoms contain a positively charged, dense nucleus composed of protons and neutrons (nucleons). Negatively charged electrons occupy the space outside the nucleus. Use the nuclear symbol ZXA to deduce the number of protons, neutrons and electrons in atoms and ions.