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Transition elements

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Question 22

Which statement(s) is/are correct for the transition metal complex [Co(en)2Cl2]+[\text{Co(en)}_2\text{Cl}_2]^+[Co(en)2​Cl2​]+, where en\text{en}en represents the bidentate ligand ethylenediamine?

  1. The oxidation number of Co\text{Co}Co is +3.
  2. It can exist as both optical and cis\text{cis}cis-trans\text{trans}trans isomers.
  3. The coordination number of Co\text{Co}Co is 4.
A

1, 2 and 3

B

Only 1 and 2

C

Only 2 and 3

D

Only 1

Markscheme

Transition elements Questions

  1. A Level
  2. /Chemistry
  3. /Transition elements

48 exam-style questions on OCR A A Level Chemistry Transition elements. Each one has a worked solution and a mark scheme showing where the marks go.

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