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B Conductors and electrons

  1. Jun 5, 2017 #1
    Why is a sea of electrons present in a conductor?
    I read some where that they absorb a energy at normal temperatures and use it to get free electrons , but then why do they absorb energy while insulators don't??
     
  2. jcsd
  3. Jun 5, 2017 #2

    Drakkith

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    Staff: Mentor

    In metallic conductors the atoms bond together in a particular way that results in one or more electrons being shared completely between the atoms. The behavior of huge numbers of these electrons in a metal can be described as a "sea of free charges", meaning that they are free to roam around the entire conductor at will.

    Conductors already have free electrons and don't need thermal energy to free the electrons from their atoms.
     
  4. Jun 5, 2017 #3
    Ok.
    What do you mean by "being shared completely"? How do they roam around then?


    PS
    How do you insert quotes?
     
  5. Jun 5, 2017 #4

    Drakkith

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    Staff: Mentor

    Metallic bonding: https://en.wikipedia.org/wiki/Metallic_bonding

    The sharing lets them move throughout the entire material freely. There's not much more I can say about that. See if the link above helps.

    Click "Reply" to quote the entire post. Highly text in a post and click "Reply" in the popup to quote that piece of text. Alternatively, you can click "Quote" instead to add that post or piece of text to a quote que. After adding text or posts to the quote que, you click "Insert Quotes" that appears in the bottom left of the reply box.
     
  6. Jun 8, 2017 #5
    Thanks.
    That helped and the quote part too!
     
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