A half filled sub-shell is more stable than other partially filled shells. As an example use Chromium. It should by logic have the following:
Sc = [Ar]4s23d1
Ti = [Ar]4s23d2
V = [Ar]4s23d3
Cr should in theory be Cr = [Ar]4s23d4
but it is not. Half filled shells are more stable so the configuration is
Cr = [Ar]4s13d5 two half filled sub levels and then Manganese is
Mn = [Ar]4s23d5 one full and one half filled level.
If all the electron orbitals are filled then the atom is inert. It will not chemically react with anything. If an atom has empty spaces in the outer orbit, it will react with other elements. Electrons from other elements can share positions in the outer orbits.
Stable.
A completley filled out electron level makes the atom stable
8 electrons
Group 18 aka the Noble Gases / Inert Gases.
If all the electron orbitals are filled then the atom is inert. It will not chemically react with anything. If an atom has empty spaces in the outer orbit, it will react with other elements. Electrons from other elements can share positions in the outer orbits.
If the atom is chemically stable it doesnt need to bond, it is chemically stable when the outermost level is completely full of electrons
the one that is completely filled
Stable.
yes
A completley filled out electron level makes the atom stable
8 electrons
it is called complete or completely stable
The noble gases family in Group 18 have a filled outer energy level, making them very stable and unreactive.
helium has completely filled valence orbitals and hence is stable
Group 18 aka the Noble Gases / Inert Gases.
An atom with an incompletely filled outermost energy level is likely to be reactive. This is because atoms tend to gain, lose, or share electrons to achieve a stable outer electron configuration. Atoms with incomplete outermost energy levels are looking to fill or empty their outermost energy level to achieve stability.