DP Chemistry (last assessment 2024)
Question 22M.1.sl.TZ1.5
| Date | May 2022 | Marks available | [Maximum mark: 1] | Reference code | 22M.1.sl.TZ1.5 |
| Level | sl | Paper | 1 | Time zone | TZ1 |
| Command term | Deduce | Question number | 5 | Adapted from | N/A |
5.
[Maximum mark: 1]
22M.1.sl.TZ1.5
Naturally occurring gallium consists of the isotopes 71Ga and 69Ga. What is the approximate percentage abundance of 69Ga?
Mr (Ga) = 69.72.
A. 40 %
B. 50 %
C. 60 %
D. 75 %
[1]
Markscheme
C