The electronic configuration of an element is 2.8.22.8.22.8.2. Which option correctly identifies the group and period of the periodic table where this element is found?
Group 2, period 3
Group 3, period 2
Group 2, period 8
Group 8, period 3
80 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.