A-Level
CAIE
Physics
May 2025
QP-202505-Physics-P43 · Question 2
Question (excerpt):
9702/43/M/J/25 © UCLES 2025 2 A helium atom may be modelled as a nucleus surrounded by two electrons in diametrically opposite circular orbits, each of radius 170 pm, as shown in Fig. 2.1. 170 pm elec…
9702/43/M/J/25 © UCLES 2025 2 A helium atom may be modelled as a nucleus surrounded by two electrons in diametrically opposite circular orbits, each of radius 170 pm, as shown in Fig. 2.1. 170 pm elec…
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