The atomic structure of the matter
The atom The atom is the fundamental building unit of the matter, and it is the smallest individual unit of the matter which can share in the chemical reactions, Boyle, Thomas, Rutherford and Bohr...
Tagged: The elements
How can you calculate the valency of each element?
The valency The valency is the number of electrons that an atom gains, loses or even shares during a chemical reaction, The valency is the number of electrons that an atom needs to gain or...
The lanthanides and actinides in the modern periodic table
Lanthanides and actinides Lanthanides and actinides are located below the modern periodic table, They consist of two rows, They are known as the f-block elements because they have valence electrons in the f-shell, Lanthanides...
The properties of the noble (inert) gases
The inert gases are the elements in which the outermost electron shells are completely filled with the electrons, so they don’t participate in any chemical combination in the ordinary conditions.
