| Date | May 2014 | Marks available | 1 | Reference code | 14M.1.hl.TZ2.4 |
| Level | HL | Paper | 1 | Time zone | TZ2 |
| Command term | Question number | 4 | Adapted from | N/A |
Question
What is the abbreviated electron configuration of the cobalt(II) ion, \({\text{C}}{{\text{o}}^{2 + }}\)?
A. \({\text{[Ar]3}}{{\text{d}}^{\text{7}}}\)
B. \({\text{[Ar]4}}{{\text{s}}^{\text{2}}}{\text{3}}{{\text{d}}^{\text{5}}}\)
C. \({\text{[Ar]4}}{{\text{s}}^{\text{2}}}{\text{3}}{{\text{d}}^{\text{7}}}\)
D. \({\text{[Ar]4}}{{\text{s}}^{\text{1}}}{\text{3}}{{\text{d}}^{\text{6}}}\)
Markscheme
A
Examiners report
[N/A]
Syllabus sections
Additional higher level (AHL) » Topic 13: The periodic table—the transition metals » 13.1 First-row d-block elements
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