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The shell corresponding to the highest value of principal quantum number in the atom. The valence electrons in this shell are on average farther from the nucleus than other electrons; they are often directly involved in chemical reaction.<ref>http://antoine.frostburg.edu/chem/senese/101/electrons/glossary.shtml</ref>
[[Image:Atoms1.jpg|right|200px]]
The '''valence shell''' is the [[electron shell]] which corresponds to the highest value of principal [[quantum number]] in an [[atom]]. The valence [[electron]]s in this shell are on average farther from the [[nucleus]] than other electrons; these are the electrons which are directly involved in [[chemical reaction]]s.<ref>http://antoine.frostburg.edu/chem/senese/101/electrons/glossary.shtml</ref>
==References==
<references />
[[Category:Subatomic Physics]]
[[Category:Chemistry]]
[[Category:Chemistry]]
[[Category:Physics]]