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Atomic models, isotopes and nuclear notation

Atomic structure and nuclear physics · Lesson 1 of 5

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Lesson 1 of 5 · Atomic structure and nuclear physics

Atomic models, isotopes and nuclear notation

3 quick checks≈2% of the testFoundational

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By the end you’ll be able to

describe the structure of an atom in terms of a central nucleus containing protons and neutrons surrounded by electrons in shells or energy levels
compare the plum pudding model, the Rutherford nuclear model and the Bohr model, and explain how alpha-particle scattering evidence led to the nuclear model
state the relative charges and relative masses of protons, neutrons and electrons

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define isotopes as atoms of the same element with the same number of protons but different numbers of neutrons

interpret and use standard nuclide notation, including symbols of the form $^A_ZX$, and distinguish between atoms and ions

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