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Main group in the periodic table

Periodic table of chemical elements

In the periodic table all chemical elements are classified according to their atomic number and their chemical properties. https://www.youtube.com/watch?v=fxaH5KXQfvc In the periodic table all chemical elements are classified according to their atomic number...
Covalent bond

Covalent bonding

In covalent bonding, the atoms involved use shared valence electrons to achieve the noble gas configuration. The covalent bond mainly occurs between two non-metals. The atoms involved in the bond, share together...
Metallic bonding of aluminum

Metallic bonding

In metal bonding, the metal atoms give off their outer electrons and in this way achieve the noble gas configuration. The main type of bonding between two metals is so-called metal bond. The...
Atomic model of Bohr (shell model)

Bohr’s atomic model

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According to the Bohr's atomic model, electrons move on discrete shells around the nucleus (discrete energy levels). The Rutherford model in many cases provides a very good explanation of physical processes in...
Noble gas configuration

Octet rule

The octet rule refers to the striving of atoms to reach the closest noble gas configuration in the periodic table by forming chemical bonds. In nature, substances rarely appear as pure elements....
Ionic bound of common salt (table slat)

Ionic bonding

In ionic bonding, the metal atoms give off their outer electrons, which are taken up by the non-metal atoms. The ionic bond is the predominant type of bonding between a metal and...