Since then, the periodic table has evolved to reflect over 150 years of scientific development and understanding in chemistry and physics. Today, with 118 known elements, it is widely regarded as one ...

This year marks the 150th anniversary of the publication of Mendeleev’s Periodic Table of Chemical Elements in 1869. In celebration, the United Nations Educational, Scientific, and Cultural ...

The questions in this quiz are suitable for GCSE chemistry students studying Mendeleev's periodic table, electronic structure and the modern periodic table. If you struggled with the quiz ...

Today the periodic table is the starting point for understanding chemistry. On the wall of every laboratory or school chemistry department you are likely to find hung a copy where chemists and student ...