Columns in the periodic table are called groups or families. Elements within the same group share similar properties because they have the same number of valence electrons (electrons in the ...

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.

The elements that make up each column of the periodic table share a set of common traits. Here, a chemist describes group 15 and the crucial role they play in life.

GCSE Combined Science Groups in the periodic table learning resources for adults, children, parents and teachers.

If you are intimidated by the periodic table, then this introduction through the first column of elements will give you a feel for how and why the elements are arranged in this order.

Two new elements were officially added to the periodic table this month, after being approved by an international panel. The complicated process took years; now elements 114 and 116 just need ...

150 years on, the periodic table has more stories than it has elements Its organization holds stories of discovery and strange reactions ...