The outermost shell or orbital of an atom is called its valence shell. The electrons in these shells take part in bonding with other atoms. It may be fully filled or half-filled. For example, the atomic number of magnesium (Mg) is 12 and its electronic configuration is 1s22s22p63s2.
Answers & Comments
Answer:
valance shell is the shell of an atom in which the valance electrons exist
Explanation:
the electrons existing in the valence shell can be either losed or more can be gained or shared to form molecules and compounds.
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