Which gaseous ion in its ground state has the exact same number of unpaired electrons as a neutral ground-state sulfur atom?
A
Fe3+\text{Fe}^{3+}Fe3+
B
Co2+\text{Co}^{2+}Co2+
C
Ni2+\text{Ni}^{2+}Ni2+
D
Cu2+\text{Cu}^{2+}Cu2+
Markscheme
Atomic structure Questions
33 exam-style questions on AQA A Level Chemistry Atomic structure, covering Fundamental particles, Mass number and isotopes, and Electron configuration. Each one has a worked solution and a mark scheme showing where the marks go.