DP Chemistry (last assessment 2024)
Question 19M.1.sl.TZ1.6
| Date | May 2019 | Marks available | [Maximum mark: 1] | Reference code | 19M.1.sl.TZ1.6 |
| Level | sl | Paper | 1 | Time zone | TZ1 |
| Command term | Question number | 6 | Adapted from | N/A |
6.
[Maximum mark: 1]
19M.1.sl.TZ1.6
What is the ground state electron configuration of an atom of chromium, Cr (Z = 24)?
A. [Ar]3d6
B. [Ar]4s23d4
C. [Ar]4s13d5
D. [Ar]4s24p4
[1]
Markscheme
C
Examiners report
A large number of the candidates had ground state configuration of Cr as 4s2 3d4 rather than 4s1 3d5