Sodium has ONE valence electron in its outer shell that is to be donated to any kind of oxidant. By then the outer (3rd) shell (of the Na+ ion) is EMPTY, so the 2nd shell has become the outmost, containing 8 electrons (Ne-configuration). No electrons at all are taken up by sodium.
The outer shell is called the valence shell
Sulfur has 6 outer valence electrons.
Carbon has four valence electrons, so it will need four more electrons to fill its outer shell.
valence electrons are the electrons on the outer-most shell of electrons
These electrons are called "outershell electrons" or "valence electrons."
The valence electrons
Valence electrons.
4V V-Valence Electrons Valence Electrons-Last electron (which is on the outer shell)
2 valence electrons
Valence electrons.
Valence electrons
The outer electrons of an atom are called valence electrons.