Dmitri Mendeleev's periodic table, first published in 1869, was a milestone in chemical classification, yet it differs in several fundamental ways from the modern periodic table.
State two differences between how elements are arranged and grouped in the modern periodic table compared to Mendeleev's periodic table.
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.