If an atom has three electrons, it will have one valence electron (valance = outer shell). It will be more likely to lose an electron than gain one, since it has only one to lose, but seven to gain.
I believe it's just the outer shell. It is where the outer electrons are contained.
An outer electron configuration with one or two electrons in the outermost shell would be expected to belong to a reactive metal. This is because metals tend to lose electrons to achieve a stable electron configuration, and elements with one or two electrons in the outer shell are more likely to lose those electrons easily.
Fluorine is likely to gain one electron to achieve a full outer shell and attain stability. This gives it a negative charge as it gains an extra electron.
Sodium has one outer ring electron, and chlorine has seven outer ring electrons. Sodium tends to lose its outer electron, while chlorine tends to gain an extra electron to achieve a stable electron configuration.
Alkali earth metals have 2 electrons in their outer energy level. This outer level is known as the valence shell, and having 2 electrons makes these metals highly reactive and likely to form ionic bonds to achieve a full outer shell of 8 electrons.
Elements acquire a stable atomic structure like that of a noble gas by gaining, losing, or sharing electrons to achieve a full outer electron shell. This full outer shell results in a stable electron configuration similar to that of noble gases, which have complete valence electron shells. This stability is achieved by attaining a full outer electron shell and minimizing electron repulsion.
I believe it's just the outer shell. It is where the outer electrons are contained.
The radius of an atom extends to the outer edge of its electron cloud, which is the region where electrons are most likely to be found in. The electron cloud represents the volume of space where electrons can exist around the nucleus of an atom.
The significance of an outer electron is that it is the (only) electron that can interact with other electrons, rendering it extremely valuable.
An outer electron configuration with one or two electrons in the outermost shell would be expected to belong to a reactive metal. This is because metals tend to lose electrons to achieve a stable electron configuration, and elements with one or two electrons in the outer shell are more likely to lose those electrons easily.
Fluorine is likely to gain one electron to achieve a full outer shell and attain stability. This gives it a negative charge as it gains an extra electron.
Sodium has one outer ring electron, and chlorine has seven outer ring electrons. Sodium tends to lose its outer electron, while chlorine tends to gain an extra electron to achieve a stable electron configuration.
These are the valence electrons.
Valence Electrons
The outer electron shells of the halogens typically contain seven electrons, making them highly reactive and likely to gain one electron to achieve a stable electron configuration. Additionally, halogens have a tendency to form negatively charged ions when they react with other elements by gaining one electron.
There is one electron on cobalts outer shell.
4V V-Valence Electrons Valence Electrons-Last electron (which is on the outer shell)