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.
valence electrons
Beryllium has one outer electron shell with two electrons.
The outer most electron shell of iodine atom contains 7 electrons.
There are 8 of them.
Electron Cloud
The significance of an outer electron is that it is the (only) electron that can interact with other electrons, rendering it extremely valuable.
Valence Electrons
These are the valence electrons.
4V V-Valence Electrons Valence Electrons-Last electron (which is on the outer shell)
valence electrons
7 electrons are on the outer (valence) shells of all halogens
Beryllium has one outer electron shell with two electrons.
one electron
Valence electrons.
Valence Electrons
The outer most electron shell of iodine atom contains 7 electrons.
1 valence electron