The periodic table of chemical elements, often called the periodic table, organizes all discovered chemical elements in rows (called periods) and columns (called groups) according to increasing atomic ...

General Editor: Dame Kathleen Lonsdale. Vol. 3: Physical and Chemical Tables. Edited by Caroline H. Macgillavry and Gerard D. Rieck. Pp. xvi + 362. (Birmingham: The ...

He grouped elements into threes, where the atomic weight of the middle element was nearly the same as the average of the atomic weights of the other two elements – he called his theory 'The Law of ...

However, he is remembered for his search for a pattern in inorganic chemistry. Just four years before Mendeleev announced his periodic table, Newlands noticed that there were similarities between ...

while also giving each individual element its own chemical symbol. In this periodic table of elements quiz, you have 10 ...

After a breakdown in US-Russia relations, Riken finds itself ahead of its rivals. And Lawrence Berkeley National Laboratory ...

A chemical element is one of those squares on the periodic table that adorns many a classroom wall. Sure. But what is an element really? It is a more subtle question that you might realise.

Damp litmus paper is bleached white when it is placed in chlorine. If damp-blue litmus paper is used, the paper turns red then white.

This video explains the periodic table, containing all the known elements arranged in groups and periods. Elements in the same group of the periodic table show trends in physical properties ...