Which of the following shows the electron diagram of aluminium sulphide?

To answer this question, we first need to understand the electron configuration of both aluminium and sulphur.

1. Aluminium (Al) has 13 electrons. The electron configuration is 2, 8, 3. This means there are 2 electrons in the first energy level, 8 in the second, and 3 in the third.

2. Sulphur (S) has 16 electrons. The electron configuration is 2, 8, 6. This means there are 2 electrons in the first energy level, 8 in the second, and 6 in the third.

3. When these two elements combine to form aluminium sulphide (Al2S3), each aluminium atom loses its 3 valence electrons (from the third energy level) to form a +3 ion. Each sulphur atom gains 2 electrons to form a -2 ion.

4. Therefore, the electron diagram of aluminium sulphide will show two aluminium ions, each having lost 3 electrons (shown as dots or crosses), and three sulphur ions, each having gained 2 electrons.

5. The diagram will also show the charges on each ion: +3 for aluminium and -2 for sulphur.

Please note that the actual diagram cannot be shown in text format. You would need to draw it out on paper or use a digital drawing tool.