The number of well-known elements up till now is 118 elements, These elements can be classified according to their properties and electronic structure into metals, nonmetals and noble (inert) gases, In the 19th century,...
Kinds of molecules are one of the most important concepts in chemistry because they explain how atoms combine to form the substances around us. From the oxygen we breathe to the water we drink...
Properties of Noble (Inert) Gases make them among the most fascinating elements in the periodic table. These gases are known for their exceptional stability, low chemical reactivity, and wide range of practical applications. From...
The scientists classified the elements according to their properties to facilitate their study and to identify relationships between the elements and their chemical and physical properties. The modern periodic table was developed by Dmitri...
