AQA Chemistry; Transition Metals Final Test 2023.

AQA Chemistry; Transition Metals Final Test 2023.In what block are the transition metals found? - ANSWER D-block What is the definition of a transition metal? - ANSWER A transition metal is a metal that can form one or more stable ions with an incomplete D sub-level How many electrons can fit into the d sub-level? - ANSWER 10 What transition metals have a different electronic configuration? - ANSWER Chromium and copper How does the electronic configuration of chromium differ? - ANSWER Cr prefers to have one electron in each of the 3d sub-level and only 1 electron in the 4s sub-shell as this gives it more stability How does the electronic configuration of copper differ? - ANSWER Cu prefers to have a full 3d sub-shell and only 1 electron in the 4s sub-shell as this gives it more stability What sort of ions do transition metals form? - ANSWER Positive ions When transition metals form ions what electrons are removed first? - ANSWER The 4s electrons What metals in the d-block are not transition metals? - ANSWER As they do not have an incomplete d-shell Why is Sc not a transition metal? - ANSWER As it only forms the ion Sc³⁺, so the electronic configuration changes from [Ar]3d¹4s² to [Ar], so the d-sub level is now empty Why is Zn not a transition metal? - ANSWER As it only forms the ion Zn²⁺, so the electronic configuration changes from [Ar]3d¹⁰4s² to [Ar]3d¹⁰, so the d-sub level is full therefore does not fit with the definition of a transition metal What are the physical properties of transition metals? - ANSWER High density High mpt/bpt What are the chemical properties of transition metals? - ANSWER Can form complex ions Can form coloured ions They're good catalysts They can exist in variable oxidation states