AQA · Chemistry · 8462
GCSE Chemistry: Electronic structure
Atomic structure and the periodic table · AQA GCSE Chemistry (8462), specification point 4.1.1.7. Cards are generated from the exam board's own specification for "Electronic structure", and every card links back to the page it came from. Specification © AQA — used with attribution.
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Which energy levels do electrons in an atom fill first?
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The lowest available energy levels — the innermost available shells.
What is the electronic structure of sodium?
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2,8,1.
In what two ways can the electronic structure of an atom be represented?
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By numbers (e.g. 2,8,1) or by a diagram showing electrons in shells.
How many electrons in total does the electronic structure 2,8,1 represent?
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11 (2 + 8 + 1) — the number of electrons in a sodium atom.
What is another term for the energy levels that electrons occupy in an atom?
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Shells.
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