Because they are highly unreactive
Elements react in order to gain a stable electronic configuration, but the group 8 elements already have this, as their outer shells are already filled with electrons. Therefore they have no need to react with anything else, and that is why they are unreactive.
The only group of neutral elements is the noble gases. They are in group 0. They are electronically stable elements that do not tend to react. They exist as single molecules.
Any of the elements in Group 0 of the Periodic Table (exc. Radon) are highly unreactive and so, won't react with any elements. They are also known as the inert gases.
why atoms of group 0 elements do not form ions
There are several elements that will not react with any other elements. These elements are called the noble gases. They are Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe) and Radon (Rn). P.S. Although radon will not react with any other elements, it is radioactive.
As group 2 is a group of quite reactive elements, most elements will react with them. However, as usual the inert gases of Group 0 will not react as they are highly unreactive.
Noble Gases (also known as Group 0 or Group 8)
Elements react in order to gain a stable electronic configuration, but the group 8 elements already have this, as their outer shells are already filled with electrons. Therefore they have no need to react with anything else, and that is why they are unreactive.
The only group of neutral elements is the noble gases. They are in group 0. They are electronically stable elements that do not tend to react. They exist as single molecules.
Any of the elements in Group 0 of the Periodic Table (exc. Radon) are highly unreactive and so, won't react with any elements. They are also known as the inert gases.
The Inert Gases in Group 18 (0) (exc. Radon) are highly unreactive. They react with almost no other elements in the Periodic Table. Radon is however radioactive.
Elements in a group have very similar properties and characteristics. Every element in a group has the same amount of electrons in their outer shell. For Example, all elements in Group 2 - Alkaline Earth Metals have 2 electrons in their outer shell. Elements in the same group also have very similar characteristics such as what they react with etc. For Example:Group 2 - Alkali Metals - All react vigourously in Water.Group 18(0) - Inert Gases - All are highly unreactive.
why atoms of group 0 elements do not form ions
There are several elements that will not react with any other elements. These elements are called the noble gases. They are Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe) and Radon (Rn). P.S. Although radon will not react with any other elements, it is radioactive.
The reason it can be placed in group II is because it has 2 electrons in its outside shell (also its only shell) and the groups represent how many electrons in the elements outside shell, the reason it is normally placed in group 8 or 0 is because the first shell has a maximum of 2 electrons and all elements that have a full outside shell are placed in group 8/0 and can't normally react.
Group 0
The elements in Group 0 - Inert Gases group are all highly unreactive and so don't combine with other elements.