Chemistry A-Level
Shielding
What Shielding means in Chemistry A-Level, as defined for AQA.
Definition of Shielding
Check what you remember
Read the wording for your board, then hide it and explain Shielding in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
The reduction in nuclear attraction felt by an outer electron because of repulsion and screening by inner-shell electrons.
Topics that use Shielding
- Group 2, the alkaline earth metals (AQA A-Level)
Related terms
- alkalinity of the product
- barium sulfate precipitate
- cold water versus steam
- First ionisation energy
- Group 2 sulfate solubility
- hydroxide solubility
- increasing reactivity down the group
- metallic bonding and melting point
Using Shielding 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