Just some notes which might help other peeps and also has done to me well writing them out....and also if u cud chek em????
Transition Metals: Small and densely charges this then attracts ligands (molecule or ions which joins onto metal by forming dative covalent bonds) this then forms compex ions (where a metal ion is surrounded by ligands)
They attract ligands e.g. NH3, H20 and Cl
They form different shapes depending in what they join e.g NH3 and H20 will form octahedral shaped ions and with coordinate numba of 6 but Cl will form tetrahedral as smaller and will form 4 coordinate number. When exchange reactions occur then they will not change ie in shape or number but if with Cl then shape and coordinate number will change.
Transition Metals chnage Oxidation states by gaining/loosing electrons..this then also makes them good for catalysts e.g. Nickel.....
They can increase Oxidation state by reacting with H202 in alkali solution or decrease Oxidation state by reacting with Zn/HCL.
Well hope that helps
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Edexcel Chemistry watch
- Thread Starter
- 22-06-2005 20:59