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Question

_____ electrons are located in the outermost shell of an atom.


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Solution

Valence electrons:

  1. In an atom, electrons are distributed in various shells.
  2. The electrons that are present in the outermost shell of an atom are called valence electrons.
  3. For example, the atomic number of sodium is 11.
  4. Its electronic configuration is given as 2,8,1.
  5. The valence electrons present in the sodium atom are 1.

Hence, valence electrons are located in the outermost shell of an atom.


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