Hey there! Sign in to join this conversationNew here? Join for free
    • Thread Starter
    Offline

    14
    ReputationRep:
    Hi guys,

    Just wondering whether anyone could help as I've been stuck on this for a while. I've been asked to draw the dot and cross diagram of the anion XeCl3 -

    Thanks in advance for any help!
    Blake
    Offline

    19
    ReputationRep:
    What have you tried?
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by alow)
    What have you tried?
    I put the Xe atom in the middle with one electron and put the three Cl's around the Xe each with 7 electrons in their outer shell, I tried various arrangements of the seven electrons in each of the Cls, I tried single dative bonds, covalent double bonds etc and I also tried Xe2Cl6 -2 but I couldn't get all the atoms to have full outer shells
    Offline

    19
    ReputationRep:
    (Original post by Blake Jones)
    I put the Xe atom in the middle with one electron and put the three Cl's around the Xe each with 7 electrons in their outer shell, I tried various arrangements of the seven electrons in each of the Cls, I tried single dative bonds, covalent double bonds etc and I also tried Xe2Cl6 -2 but I couldn't get all the atoms to have full outer shells
    Try one dative bond and two normal covalent bonds.

    Dot and cross diagrams are not going to be very good at representing Xe compounds, don't expect there to be a "full shell" of electrons around the Xenon, just make sure it's not a radical.
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by alow)
    Try one dative bond and two normal covalent bonds.

    Dot and cross diagrams are not going to be very good at representing Xe compounds, don't expect there to be a "full shell" of electrons around the Xenon, just make sure it's not a radical.
    Ah okay, thanks!
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by alow)
    Try one dative bond and two normal covalent bonds.

    Dot and cross diagrams are not going to be very good at representing Xe compounds, don't expect there to be a "full shell" of electrons around the Xenon, just make sure it's not a radical.
    How do I go about the two normal bonds when Xe only has one electron?
    Offline

    19
    ReputationRep:
    (Original post by Blake Jones)
    How do I go about the two normal bonds when Xe only has one electron?
    Xe has 8.
    Offline

    17
    ReputationRep:
    It doesn't have your ion, but the videos for the various other species do explain how to do this sort rather well.

    I'd suggest watching a few of them as a bit of repetition makes it all make sense rather quickly.

    http://www.kentchemistry.com/links/b...sdotstruct.htm

    w00t
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by alow)
    Xe has 8.
    But this is an anion so surely it has one more?
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by Pigster)
    It doesn't have your ion, but the videos for the various other species do explain how to do this sort rather well.

    I'd suggest watching a few of them as a bit of repetition makes it all make sense rather quickly.

    http://www.kentchemistry.com/links/b...sdotstruct.htm

    w00t
    Thanks, I'll watch them in a sec!
    Offline

    19
    ReputationRep:
    (Original post by Blake Jones)
    But this is an anion so surely it has one more?
    One of the Cls is effectively charged, not the Xe. It's a lot easier to add an electron to a halogen than a noble gas.
    • Thread Starter
    Offline

    14
    ReputationRep:
    (Original post by alow)
    One of the Cls is effectively charged, not the Xe. It's a lot easier to add an electron to a halogen than a noble gas.
    Thanks!
 
 
 
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • Poll
    Brussels sprouts
  • See more of what you like on The Student Room

    You can personalise what you see on TSR. Tell us a little about yourself to get started.

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.