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Question bank

Original exam-style questions, mapped to your syllabus. Answers are checked for mathematical equivalence and every attempt updates your mastery.

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12 questions

SA-9702-QP3-0021 markL1 FoundationCalculatorEnergy levels
Calculate the energy of the photon emitted when an electron falls from −0.85-0.85 eV to −3.40-3.40 eV, in eV.

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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0031 markL1 FoundationCalculatorEnergy levels
Calculate the number of different spectral lines possible from transitions between 55 energy levels.

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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0041 markL1 FoundationCalculatorLine spectra
An emission line spectrum consists of
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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0061 markL1 FoundationCalculatorEnergy levels
The ground state of hydrogen is −13.6-13.6 eV. State the ionisation energy of hydrogen, in eV.

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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0091 markL1 FoundationCalculatorEnergy levels
An electron at zero energy in an energy level diagram
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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0121 markL1 FoundationCalculatorEnergy levels
Line spectra are evidence that
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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0012 marksL2 StandardCalculatorEnergy levels
An electron in hydrogen falls from −1.51-1.51 eV to −3.40-3.40 eV. Calculate the wavelength of the emitted photon, in nm. (h=6.63×10−34h=6.63\times10^{-34} J s; c=3.00×108c=3.00\times10^8 m s⁻¹; 11 eV =1.60×10−19=1.60\times10^{-19} J)

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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0051 markL2 StandardCalculatorLine spectra
Dark lines in an absorption spectrum occur because
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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0071 markL2 StandardCalculatorEnergy levels
On an energy level diagram, the transition giving the photon of longest wavelength is the one with
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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0081 markL2 StandardCalculatorEnergy levels
A photon of wavelength 122122 nm is emitted by hydrogen. Calculate the energy difference between the levels, in eV. (h=6.63×10−34h=6.63\times10^{-34} J s; c=3.00×108c=3.00\times10^8 m s⁻¹; 11 eV =1.60×10−19=1.60\times10^{-19} J)

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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0101 markL2 StandardCalculatorLine spectra
The dark lines in the absorption spectrum of a gas are at the same wavelengths as
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Salam Academy Original Practice · Proposed mark scheme
SA-9702-QP3-0113 marksL3 ExamCalculatorEnergy levels
Hydrogen's levels are En=−13.6n2E_n=-\dfrac{13.6}{n^2} eV. Calculate the wavelength of the photon emitted in the transition from n=3n=3 to n=2n=2, in nm. (h=6.63×10−34h=6.63\times10^{-34} J s; c=3.00×108c=3.00\times10^8 m s⁻¹; 11 eV =1.60×10−19=1.60\times10^{-19} J)

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Salam Academy Original Practice · Proposed mark scheme