lowest locants
What lowest locants means in Chemistry A-Level, as defined for AQA.
Definition of lowest locants
Check what you remember
Read the wording for your board, then hide it and explain lowest locants in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Numbering the chain from whichever end gives the lower locant to the functional group first and then to the substituents.
Topics that use lowest locants
- Nomenclature (AQA A-Level)
Related terms
- alphabetical prefixes
- Displayed formula
- General formula
- Homologous series
- IUPAC rules
- Molecular formula
- difference of CH₂
- longest chain
Using lowest locants 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.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge