AQA A LEVEL CHEMISTRY 2022 - PAPER 3 QUESTIONS AND ANSWERS ALREADY PASSED A+

what colour is {Fe(H2O)6}2+ - CORRECT ANS pale green Transition Metal definition - CORRECT ANS D block elements that form at least one stable ion with a partially filled d orbital Classic elements which are not transition metals despite being D-Block elements - CORRECT ANS Scandium and Zinc properties of transition metals which are NOT shared by other metals - CORRECT ANS -multiple oxidation states -coloured ions in solution -great catalysts -form complexes with ligands ligand - CORRECT ANS a molecule which forms a dative bond with a transition metal complex ion - CORRECT ANS A transition metal ion bonded to one or more ligands by coordinate bonds co-ordination number - CORRECT ANS The number of co-ordinate bonds formed to a central metal ion What is an example of incomplete ligand substitution? - CORRECT ANS [Cu(NH3)6]2+ to [Cu(NH3)4(H2O)2]2+ why does the coordination number not change when substituting water for ammonia ? - CORRECT ANS because they are of a similar size Why does incomplete ligand substitution usually occur? - CORRECT ANS when substituting ligands of a different size