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Chlorine and bromine

  1. Apr 19, 2014 #1
    Why can't chlorine and bromine form a covalent compound?

  2. jcsd
  3. Apr 19, 2014 #2
    They are highly electronegative. They can only accept electrons, but they can't lose them, as this would require a lot of energy. They have positive ionisation enthalpy value and negative electron gain enthalpy.
    Last edited: Apr 20, 2014
  4. Apr 20, 2014 #3
    But chlorine, bromine, fluorine.... They form molecules which are covalent too... I mean like Cl2, Br2....

  5. Apr 20, 2014 #4
    Yes, they do form covalent compounds, for example in CCl4, there are four covalent bonds, and in CH2Br, CH3Br, etc. I forgot that it's hard for them to lose electrons, but they can share them, as in Carbon tetrachloride.
  6. Apr 20, 2014 #5
    So it also requires a lot energy when they form CH3Br and CH2Br?

  7. Apr 20, 2014 #6


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    Staff: Mentor

    They do, it is called bromine monochloride.
  8. Apr 20, 2014 #7
    Oh I see thanks!

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