Nickel is a transition element. Which of these properties does it show? 1 It is able to act as a catalyst. 2 It can conduct electricity while molten. 3 It produces coloured compounds. 4 It shows only one oxidation state in its compounds.
- A1, 2 and 3
- B1, 3 and 4
- C1 and 2 only
- D1 and 3 only