Its the s and p orbitals
Elements with full s and p orbitals in their highest electron shell are the noble, or inert, gases of the last column on the periodic table: He, Ne, Ar, Kr, Xe, and Rn.
These elements, known as the alkali metals (group 1A) and alkaline earth metals (group 2A), are those in which the outer-shell s orbitals are being filled. On the right is a block of six columns. These are the elements in which the outermost p orbitals are being filled.
Group 18 or Noble gases. As they have completely filled orbitals.
A roman numeral in parentheses follows the name of the metal... apex
Its the s and p orbitals
The elements of group 18 are known as inert because they havecompletelyfilled atomic orbitals.
Elements with full s and p orbitals in their highest electron shell are the noble, or inert, gases of the last column on the periodic table: He, Ne, Ar, Kr, Xe, and Rn.
Completely filled s orbital is more stable than half filled s orbitals and it is difficult to remove electrons from the former due to extra stibility. Group IIA elements (or alkaline earth metals) have completely filled s orbitals, whereas group IA elements have half filled s orbitals.
These elements, known as the alkali metals (group 1A) and alkaline earth metals (group 2A), are those in which the outer-shell s orbitals are being filled. On the right is a block of six columns. These are the elements in which the outermost p orbitals are being filled.
because they have completely filled orbitals (or shells). hence generally are inert
Because helium has completely filled orbitals as do all the elements in the last column (group 18 elements or noble gases).
Group I elements (that is alkali metals)
In the Period Table of the Elements, there are 18 groups, Groups 1-18.Group 0 does not exist.
Group 18 or Noble gases. As they have completely filled orbitals.
A roman numeral in parentheses follows the name of the metal... apex
group 18 elements. they are inert because they have completely filled orbitals and and stable or chemically inert.