are valence electrons , the ones that are found ONLY in the most outershell , or is

[flamestodust]

it foound in any outershel? are valence electrons , the ones that are found ONLY in the most outershell , or is it foound in any outershell ?
as in is it found in only 1 orbital or all the orbitals?

 

[Mr. Silver]

Valence electrons are the electrons located on the outermost shell of an atom.