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 ...

For example, the first chapter is about the chemistry of portable electronic devices and introduces the basics of the periodic table in the context of a smartphone. The material for each chapter is ...

The periodic table - AQA Mendeleev made an early periodic table. In the modern periodic table, elements are in order of atomic number in periods and groups. Electronic structures model how ...