Chemistry A-Level
Δ and Λ propeller forms
What Δ and Λ propeller forms means in Chemistry A-Level, as defined for OCR.
Definition of Δ and Λ propeller forms
Check what you remember
Read the wording for your board, then hide it and explain Δ and Λ propeller forms in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: OCR
The two mirror-image senses in which the three chelate rings wind around the metal like a propeller and cannot be superimposed.
Topics that use Δ and Λ propeller forms
- Transition elements (OCR A-Level)
Related terms
- Balanced ionic equations for precipitation
- Balancing complex half-equations
- bidentate ligands
- Bidentate ligands giving octahedral complexes
- Bond angles and shape prediction
- Boundary cases scandium and zinc
- Calculating oxidation state from a formula
- Catalytic behaviour of transition metals and their compounds
Using Δ and Λ propeller forms in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Chemistry A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge