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M3, B1 Periodicity
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Total cards: 4•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (4)
#1
Front (Question)
Define “periodicity”
Back (Answer)
The repeating pattern of trends across different periods.
#2
Front (Question)
Why are elements organised into periods?
Back (Answer)
Atoms across each period have the same number of electron shells (as indicated by the period number). Periods (horizontal rows of elements) shows the gradual changes in physical and chemical properties across the period.
#3
Front (Question)
Why are elements organised into groups?
Back (Answer)
Atoms down each group have the same number of outer shell electrons (indicated by the groups) Groups (vertical columns of elements) have similar physical and chemical properties.
#4
Front (Question)
What 3 factors affect ionisation energy?
Back (Answer)
• Nuclear charge • Atomic radius • Electron shielding