Transition elements

Cards (34)

  • What is a transition metal?
    A metal that forms stable ions with a partially filled subshell
  • What is a d block element?
    Elements with their highest energy electron resides in a d orbital
  • What is a ligand?
    A molecule that donates an electron pair to a transition metal
  • What is a bidentate ligand?
    A ligand that donates two pairs of electrons to a transition metal
  • What is a monodentate ligand?
    A ligand that is able to donate one pair of electrons to a transition metal
  • What is a cis-trans isomerism?
    Where the two identical ligands are next to each other (cis) or opposite each other (trans)
  • What is optical isomerism?
    Where two molecules are non-superimposable mirror images
  • What is an example of a cis-trans square planar complex?
    Cisplatin and transplatin
  • How is cisplatin used as anti-cancer drug/
    Undergoes ligand substitution reaction where guanine replaces chlorine preventing DNA replication
  • How to name transition metal complexes
    - Identify ligands in order
    - Identify number of ligands and use prefixes mono, di
    - Place ligands in alphabetical order
    - If positive, use TM name and numeral
    - If negative, use -ate name
  • Negative transition metal names for copper, silver and iron
    Cuprate
    Arganate
    Ferrate
  • Name two bidentate ligands
    Ethandioate and 1,2 diethylamine
  • Formula for ethandioate
    [C2O4]4-
  • Formula for 1,2-diethylamine
    H2NCH2CH2NH2
  • What colour is Cu2+(aq)?
    Pale blue solution
  • What colour is Cu2+(aq) when OH is added?
    Cu(OH)2 - blue precipitate
  • What colour is Cu2+(aq) in excess OH?
    Deep blue solution
  • What colour is Cu2+(aq) in excess NH3?
    Dark blue solution
  • What ion is formed from adding excess HCl to Cu2+(aq)?
    [CuCl4}2-
  • What colour is [CuCl4]2-(aq)?
    Yellow
  • What colour is Mn2+(aq)?
    Pale pink
  • What colour is Mn2+(aq) when OH is added?
    Light brown
  • What colour is Mn2+(aq) when excess OH is added?
    Dark brown
  • What colour is Mn2+(aq) when NH3 is added?
    Light brown
  • What colour is Mn2+(aq) when excess NH3 is added?
    Dark brown
  • What colour is Fe2+(aq)?
    Pale green
  • What colour is Fe2+(aq) when OH is added?
    Green precipitate
  • What colour is Fe3+(aq) ?
    Yellow
  • What colour is Fe3+(aq) when OH is added?
    Orange-brown
  • What colour is Cr3+(aq)?
    Purple
  • What colour is Cr3+(aq) when OH is added?
    Grey-green
  • What colour is Cr3+(aq) when excess OH is added?
    Dark green
  • What colour is Cr3+(aq) when NH3 is added?
    Grey-green
  • What colour is Cr3+(aq) when excess NH3 is added?
    Purple