The arrangement of chemical elements in groups and periods is determined by the periodicity of the chemical properties. In the case of the transition state elements, there are some smaller groups because of the way the incomplete inner electron shells are filled.
all elements in group 8 are very stable as they have 8 electrons in their outermost electron shell, satisfying the octet rule. They are very stable and are called noble gas. they exist in a monoatomic gas.
The naturally-occurring group 8 elements (helium, neon, argon, and kyrpton) are not completely inert, but they are more nearly so than any other group.
group 8, the noble gasses.
Both terms are acceptable due to the fact that eight electrons exist in the outermost shell of all elements in the group. Therefore, one could say that this group has 8 electrons in the outermost shell or that there are no electrons in the outermost shell - as the structure is stable! It is the perspective of a person.
group 7 - halogens group 8 - noble gases
The elements in group 8 of the periodic table are called noble gases. They have similar properties such as being odourless, colourless and have very low reactivity. The noble gases have full valence electron shells which give them a very big ionization energy.
Group 8 elements, also known as the noble gases, have 8 valence electrons. This is the maximum number of electrons that can occupy the outer shell of an atom, giving them stability and low reactivity.
Group 19 elements have 8 valence electrons (obey octet rule) and are hence stable.
The valency of first four main group elements is equal to their group numbers but elements from Group 5 to 8 have two valencies one equal to group number and second is obtained by subtracting group number from 8.
There are 8 elements in the third period of periodic table. The elements belong to group-1,2,13,14,15,16,17 and 18
=NOBLE GASES=
You mean inert. It's group 18, the noble gases. They don't typically react with any other elements because they have a very stable arrangement of 8 electrons in the outer energy level.