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1.3 Properties of transition metals

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Question 9

A technician has two samples of cobalt oxide. Sample A contains cobalt ions with a charge of +2. Sample B contains cobalt ions with a charge of +3. Which pair gives the formula of sample A followed by the formula of sample B?

[1]
A

CoO\text{CoO}CoO and Co2O3\text{Co}_2\text{O}_3Co2​O3​

B

CoO\text{CoO}CoO and Co3O2\text{Co}_3\text{O}_2Co3​O2​

C

CoO2\text{CoO}_2CoO2​ and Co3O2\text{Co}_3\text{O}_2Co3​O2​

D

CoO2\text{CoO}_2CoO2​ and Co2O3\text{Co}_2\text{O}_3Co2​O3​

Markscheme

1.3 Properties of transition metals Questions

  1. GCSE
  2. /Chemistry
  3. /1.3 Properties of transition metals

91 exam-style questions on AQA GCSE Chemistry 1.3 Properties of transition metals, covering 1.3.1 Comparison with Group 1 elements and 1.3.2 Typical properties of transition metals. Each one has a worked solution and a mark scheme showing where the marks go.

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