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Atomic structure

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Question 5
71%

Which of the following pairs contains species with different total numbers of electrons?

A

NO+\text{NO}^+NO+ and CN−\text{CN}^-CN−

B

Sc3+\text{Sc}^{3+}Sc3+ and Cl−\text{Cl}^-Cl−

C

O3\text{O}_3O3​ and SO2\text{SO}_2SO2​

D

NH2−\text{NH}_2^-NH2−​ and H3O+\text{H}_3\text{O}^+H3​O+

Markscheme

Atomic structure Questions

  1. A Level
  2. /Chemistry
  3. /Atomic structure

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.

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