DP Chemistry (first assessment 2025)
Question 21M.1A.HL.TZ2.5
| Date | May 2021 | Marks available | [Maximum mark: 1] | Reference code | 21M.1A.HL.TZ2.5 |
| Level | HL | Paper | 1A | Time zone | TZ2 |
| Command term | State | Question number | 5 | Adapted from | N/A |
5.
[Maximum mark: 1]
21M.1A.HL.TZ2.5
The first eight successive ionization energies for an element are shown. In which group is the element?
Copyright Prof Mark Winter.
A. 6
B. 7
C. 8
D. 17
[1]
Markscheme
A
Syllabus sections
Structure 1. Models of the particulate nature of matter » Structure 1.3—Electron configurations » Structure 1.3.6—In an emission spectrum, the limit of convergence at higher frequency corresponds to ionization. Explain the trends and discontinuities in first ionization energy (IE) across a period and down a group. Calculate the value of the first IE from spectral data that gives the wavelength or frequency of the convergence limit.