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Homework Help: Chemistry (halogens)

  1. Jan 24, 2010 #1
    1. The problem statement, all variables and given/known data
    This is an assignment given by my chemistry teacher. Plz help.

    State the colors of the first 4 halogens in:
    (i) the three states: (s), (l), (g)
    (ii) the two solvents: water, organic solvents

    3. The attempt at a solution
    I had some figured out:
    Cl(s): Yellowish-green
    Br(s): Brownish-red
    I(s): Black
    I(g): Purple

    But I still can't figure out the other colors.
    Would appreciate the help, thanks.
  2. jcsd
  3. Jan 27, 2010 #2
    Please help!
  4. Jan 27, 2010 #3
    I do not know the answer to your question so I would suggest you talk to your chemistry teacher.

    -bromine is a liquid at room temperature, not a solid.
    -iodine appears twice
    -need to include flourine
    -flourine, bromine, iodine and chlorine each need a subscript '2' because they are diatomic molecules
    -flourine and chlorine are gases

    I hope this helps
  5. Jan 29, 2010 #4
    Diatomic molecules... Forgot that >.<
    Thanks for the thread. (Colors of chemicals are really frustrating!)
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