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

    16
    ReputationRep:
    So the school gave us some work over the summer and I don't understand one of the check-list things.

    It says:

    Do you understand how the endings -ate and -ide tell you which elements are present in a compound.

    Also how do you work out the formula for aluminium nitride
    and Iron(3)sulphide.
    I'm not sure what the charges are for nitride and the sulphide?

    Thanks in advance
    • Very Important Poster
    • Welcome Squad
    Offline

    22
    ReputationRep:
    Ide mwans its on its own
    Ate I think means it also has hydrogen or oxygen combined as well

    Posted from TSR Mobile
    Offline

    0
    ReputationRep:
    -ide and -ate are easy.
    There are too many chemical elements which have many oxidation states. Typically, The highest (+) oxidation state has ending (ate), and lowest has ending (ide)

    For example: Sulfur has 3 different types of oxidation states. -2, +4 and +6.
    When Sulfur uses its -2 oxidation state, we call it Sulfide. Na2S sodium sulfide.
    When Sulfur uses its +4 oxidation state, we call it Sulfite. Na2SO3 sodium sulfite
    When Sulfur uses its +6 oxidation state, we call it Sulfate. Na2SO4 sodium sulfate.

    and by the way, Iron (III) sulfide is: Fe2S3
    aluminium nitride is: AlN
    As I said ide has the lowest (o.s) Sulphide- (-2), nitride - (-3)
 
 
 
  • 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
    Did TEF Bronze Award affect your UCAS choices?
  • 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.