| Date | May 2012 | Marks available | 1 | Reference code | 12M.1.hl.TZ2.6 |
| Level | HL | Paper | 1 | Time zone | TZ2 |
| Command term | Question number | 6 | Adapted from | N/A |
Question
What is the electron configuration of \({\text{S}}{{\text{n}}^{2 + }}\)?
A. \(1{{\text{s}}^2}2{{\text{s}}^2}2{{\text{p}}^6}3{{\text{s}}^2}3{{\text{p}}^6}4{{\text{s}}^2}3{{\text{d}}^{10}}4{{\text{p}}^6}5{{\text{s}}^2}4{{\text{d}}^{10}}5{{\text{p}}^2}\)
B. \(1{{\text{s}}^2}2{{\text{s}}^2}2{{\text{p}}^6}3{{\text{s}}^2}3{{\text{p}}^6}4{{\text{s}}^2}3{{\text{d}}^{10}}4{{\text{p}}^6}5{{\text{s}}^2}4{{\text{d}}^{10}}\)
C. \(1{{\text{s}}^2}2{{\text{s}}^2}2{{\text{p}}^6}3{{\text{s}}^2}3{{\text{p}}^6}4{{\text{s}}^2}3{{\text{d}}^{10}}4{{\text{p}}^6}4{{\text{d}}^{10}}5{{\text{p}}^2}\)
D. \(1{{\text{s}}^2}2{{\text{s}}^2}2{{\text{p}}^6}3{{\text{s}}^2}3{{\text{p}}^6}4{{\text{s}}^2}3{{\text{d}}^{10}}4{{\text{p}}^6}5{{\text{s}}^2}4{{\text{d}}^8}5{{\text{p}}^2}\)
Markscheme
B
