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2.1 Atomic structure

2.1 Atomic structure

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Question 13
68%

An atom of chromium-52 forms the chromium(III) ion, Cr3+\text{Cr}^{3+}Cr3+.

Which row correctly identifies the number of neutrons and the number of electrons in this chromium ion?

A

242424 neutrons, 212121 electrons

B

282828 neutrons, 272727 electrons

C

282828 neutrons, 212121 electrons

D

525252 neutrons, 242424 electrons

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2.1 Atomic structure Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Atomic structure

87 exam-style questions on Edexcel GCSE Chemistry 2.1 Atomic structure, covering 2.1.1 Development of the atomic model, 2.1.2 Structure of the atom and subatomic particles, 2.1.3 Mass number, isotopes and relative atomic mass, and 2.1.4 Calculating relative atomic mass from isotopic abundance. Each one has a worked solution and a mark scheme showing where the marks go.

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