A student makes three statements about the periodic table.
Statement 1: most of the elements in the periodic table are metals
Statement 2: elements in the same period have similar chemical properties because their atoms have the same number of occupied shells
Statement 3: elements in the same group have similar, but not identical, chemical properties
Which statements are correct?
1 and 2 only
1 and 3 only
2 and 3 only
1, 2 and 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.