valence shell


Also found in: Thesaurus, Encyclopedia, Wikipedia.

valence shell

n.
The outermost shell of an atom consisting of the valence electrons.
References in periodicals archive ?
To the teacher who wrote in longhand on a manila paper the answers to our worksheet (imagine drawing molecular and geometric structures!) for our Valence Shell Electronic Pair Repulsion theory discussion in Chemistry: Thank you for taking the time to do that, and for offering lesson consultations after class to make sure we understood what was discussed.
McMaster University professor emeritus Ronald Gillespie, HFCIC, (together with Australian Ronald Nyholm) developed valence shell electron pair repulsion theory.
Metals are characterized by an excess of electrons in the valence shell. Metal ions have a tendency to lose these extra electrons in order to attain a stable configuration, resulting in an electro-positive ion.