3.2.1
Periodicity
This section introduces periodicity through the classification of elements and the physical properties of the Period 3 elements.
These pages cover s, p, d and f block classification, the trends in atomic radius, first ionisation energy and melting point, and how structure and bonding explain these trends.
Revision Notes
3 revision notes, in the order the specification teaches them.
Trends in a Period
Trends in atomic radius, first ionisation energy and melting point across Period 3 from sodium to argon.
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Trends in a Group
Key group trends, including atomic radius and first ionisation energy, linked to shells and shielding.
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Periodic Trends
Classification of elements and the wider patterns in atomic radius, ionisation energy and melting point.
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Periodicity Map
AQA A-level Chemistry · 3.2.1 Periodicity
The blocks, and atomic radius, first ionisation energy and melting point across Period 3, on one A4 page.
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Specification
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3.2.1.1
- i a
know that an element is classified as s-block according to its position in the Periodic Table as determined by its proton number
Revise - i b
know that an element is classified as p-block according to its position in the Periodic Table as determined by its proton number
Revise - i c
know that an element is classified as d-block according to its position in the Periodic Table as determined by its proton number
Revise - i d
know that an element is classified as f-block according to its position in the Periodic Table as determined by its proton number
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3.2.1.2
- ii
explain the trend in melting point of the elements Na-Ar in terms of their structure and bonding
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