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Transition metals (A-level only)

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Question 19

Which row shows the correct oxidation state and co-ordination number of cobalt in [Co(NH3)4Cl2]Cl[\text{Co}(\text{NH}_3)_4\text{Cl}_2]\text{Cl}[Co(NH3​)4​Cl2​]Cl?

A

Oxidation state: +2+2+2, co-ordination number: 444

B

Oxidation state: +2+2+2, co-ordination number: 666

C

Oxidation state: +3+3+3, co-ordination number: 444

D

Oxidation state: +3+3+3, co-ordination number: 666

Markscheme

Transition metals (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Transition metals (A-level only)

63 exam-style questions on AQA A Level Chemistry Transition metals (A-level only), covering General properties of transition metals (A-level only), Substitution reactions (A-level only), Shapes of complex ions (A-level only), Formation of coloured ions (A-level only), Variable oxidation states (A-level only), and Catalysts (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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