Stable.
Group 18 aka the Noble Gases / Inert Gases.
The valence shell (outermost energy level) of a noble gas is filled in ... ns2 np6 electron configuration except helium where it is 1s2.
If the outer energy level of an atom is already filled with electrons, it is less likely to react because atoms tend to be more stable when their outer energy levels are full. This full outer level signifies that the atom has achieved a more stable electron configuration (usually the octet rule for most elements).
A completley filled out electron level makes the atom stable
Yes. it is filled.
Stable.
The noble gases family in Group 18 have a filled outer energy level, making them very stable and unreactive.
Helium and neon will have their outer energy level filled with two electrons. Helium has 2 electrons in its only energy level, while neon has 8 electrons in its second energy level.
A noble gas is considered unreactive because it has a filled outer energy level. The full outer energy level provides stability and low reactivity, as the element does not need to gain or lose electrons to achieve a stable electron configuration.
it is called complete or completely stable
Group 18 aka the Noble Gases / Inert Gases.
The valence shell (outermost energy level) of a noble gas is filled in ... ns2 np6 electron configuration except helium where it is 1s2.
Helium (He) and Neon (Ne) will both have their outer energy level filled with 2 electrons.
If the outer energy level of an atom is already filled with electrons, it is less likely to react because atoms tend to be more stable when their outer energy levels are full. This full outer level signifies that the atom has achieved a more stable electron configuration (usually the octet rule for most elements).
Neon is a noble gas, therefore it is stable meaning that its outer energy ring is full. It has 8 elections on its outer energy level. Check out the related link for a picture of a model of Neons atom.
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.