The table shows the electronic configurations of five elements, V, W, X, Y and Z. The letters are not the chemical symbols of the elements.
| Element | Electronic configuration |
|---|---|
| V | 2.8.8.1 |
| W | 2.1 |
| X | 2.8.2 |
| Y | 2.8.6 |
| Z | 2.8.8 |
Give the group number of element Y.
Give the period number of element X.
Give the atomic number of element Y.
Give the letters of the two elements that are in the same group. Explain your answer.
Element Z is very unreactive. Explain why, using its electronic configuration.
Aluminium has atomic number 13. Give the electronic configuration of aluminium and its position in the periodic table.
50 exam-style questions on Edexcel GCSE Chemistry 2.2 The periodic table, covering 2.2.1 Mendeleev's periodic table, 2.2.2 Periods, groups, metals and non-metals, and 2.2.3 Electronic configuration and position in the periodic table. Each one has a worked solution and a mark scheme showing where the marks go.