Exam (elaborations)
A-LEVEL AQA CHEMISTRY • TRANSITION METALS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
- Course
- Institution
A-LEVEL AQA CHEMISTRY • TRANSITION METALS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
[Show more]
Seller
Follow
Performance
Reviews received
Content preview
A-LEVEL AQA CHEMISTRY • TRANSITION METALS QUESTIONS AND ANSWERS WITH SOLUTIONS 2024 Transition Metal - ANSWER Metal that can form one or more stable ions with a partially filled d sub -level. Scandium isn't a TM because... - ANSWER Has an empty d -shell when Sc3+ Zinc isn't a TM because... - ANSWER Has a full d -shell when Zn2+ Which 2 TM have 1 electron in 4s sub -level to give stability? - ANSWER Chromium and Copper Which sub levels electrons fill up first and empty first? - ANSWER 4s What physical properties do they have? - ANSWER High density High melting and boiling points Similar ionic radii What chemical properties do they have? - ANSWER Form complex ions Form coloured ions Are good catalysts Can exist in variable oxidation states Complex ion - ANSWER Central metal atom/ion surrounded by co -ordinately bonded ligands. Co-ordinate bond (Dative covalent) - ANSWER Covalent bond in which both electrons in the shared pair come from the same atom. Ligand - ANSWER Is an atom/ion/molecule that donates a pair of electrons to a central metal ion to form a transition metal. Co-ordination number - ANSWER Number of co -ordinate bonds that are formed with the central metal ion. Lewis Base - ANSWER Lone pair donor. Lewis Acid - ANSWER Lone pair acceptor. How many small ligands like H20/NH3 can fit around the central metal ion? - ANSWER 6 How many larger ligands like Cl - can fit around the central metal ion? - ANSWER 4 Shape and bond angle of 6 Co -ordinate bonds - ANSWER Octahedral, 90 degrees. Example of 6 Co -ordinate bond complex - ANSWER [Fe(H20)6]2+ (hexaaquairon(ii)) Shape and bond angle of 4 Co -ordinate bonds - ANSWER Tethrahedral, 109.5 degrees. Examples of 4 Co -ordinate bond complex - ANSWER [CuCl4]2 - and [CoCl4]2 - Colour of [CuCl4]2 - - ANSWER Yellow Colour of [CoCl4]2 - - ANSWER Blue Ni 2+ and Pt 2+ complexes have 4 co -ordinate bonds with what shape and angle? - ANSWER Square planar, 90 degrees. Shape and bond angle of 2 Co -ordinate bonds - ANSWER Linear, 180 degreesThe benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying this summary from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Performance. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy this summary for R269,48. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
66579 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy summaries for 14 years now