Chemistry A-Level
arrow direction
What arrow direction means in Chemistry A-Level, as defined for AQA.
Definition of arrow direction
Check what you remember
Read the wording for your board, then hide it and explain arrow direction in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The arrowhead points from the donor atom towards the acceptor atom, so in the ammonium ion the arrow runs from nitrogen to the added hydrogen.
Topics that use arrow direction
- Nature of covalent and dative covalent bonds (AQA A-Level)
Related terms
- arrows for dative bonds
- bond length and strength
- dative covalent bonding
- dot-and-cross diagrams
- electrostatic attraction to both nuclei
- identical once formed
- regions of electron density
- charges on ions
Using arrow direction 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.
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