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Bond Orders of Isoelectronic Species

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  1. Aug 7, 2015 #1
    How and why do isoelectronic species have the same bond order? My book cites an example that says that F2 and O2 -2 (oxygen molecule ion) has a bond order of 1. I understand how fluorine gas has a bond order of 1. But how does the oxygen molecule ion have a bond order of 1? Is it because they both have the same number of valence electrons?
    Thanks!
     
  2. jcsd
  3. Aug 7, 2015 #2

    Titan97

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    You can calculate bond order using Molecular orbital theory.
    Bond Order = [(number of electrons occupying bonding orbitals)-(number of electrons in anti-bonding orbitals)]/2
    Try to find the bond order of ##O_2##, ##{O_2}^-## and ##{O_2}^{2-}## yourself.
     
  4. Aug 7, 2015 #3
    Is there any other way to work it out? I haven't learnt anti-bonding yet.
     
  5. Aug 7, 2015 #4

    Titan97

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    Its not a difficult concept. Refer some standard inorganic chemistry textbooks for MOT.
     
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