The figure shows four test tubes. Each test tube contains a solution of a different compound.
Figure: Four test tubes containing solutions of four different compounds

Use the figure. Give the letter of the solution that is colourless.
Use the figure. Give one property of the compounds of the transition elements.
Solution Z contains the manganate(VII) ion. Manganese is a transition element.
Name the group of the periodic table that sodium is in.
40 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.