The Periodic Table is a well-organized chart that contains all 118 known elements in the universe. These elements are the ...

organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic number. Scientists use the periodic table to quickly refer to information ...

and the apparently widely different assumptions which have been introduced in various recent attempts to develop a theory of atomic constitution capable of accounting for other physical and ...

The periodic table The periodic table is a chart of all the elements arranged in increasing atomic number. Group 1 alkali metals The Group 1 elements, also known as the alkali metals, all react ...

University of Queensland scientists have cracked a long-standing puzzle in nuclear physics, showing that nuclear polarization, once thought to hinder experiments with muonic atoms, has a much smaller ...

Chemists use symbols and formulae to represent elements and compounds ... The method chosen depends on the type of mixture. Atomic structure - AQA Atoms consist of a nucleus containing protons ...