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Practise

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-AC-AT-0011 markL1 FoundationCalculatorConfigurations
How many electrons can a full 3d subshell hold?

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0051 markL1 FoundationCalculatorConfigurations
The shape of a p orbital is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0121 markL1 FoundationCalculatorConfigurations
An orbital can hold a maximum of
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0021 markL2 StandardCalculatorConfigurations
The electronic configuration of iron, Fe (Z=26Z=26), is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0031 markL2 StandardCalculatorConfigurations
The configuration of Fe³⁺ is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0041 markL2 StandardCalculatorConfigurations
The configuration of chromium, Cr (Z=24Z=24), is
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0061 markL2 StandardCalculatorParticles
A beam of protons and a beam of electrons enter the same electric field. Compared with protons, electrons are
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0072 marksL2 StandardCalculatorMass spectra
A mass spectrum of chlorine atoms shows m/zm/z 35 (abundance 3) and 37 (abundance 1). Calculate ArA_r.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0082 marksL2 StandardCalculatorMass spectra
Neon: m/zm/z 20 (90.5%), 21 (0.3%), 22 (9.2%). Calculate ArA_r to 1 d.p.

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0091 markL2 StandardCalculatorConfigurations
How many unpaired electrons are in a ground-state nitrogen atom (1s² 2s² 2p³)?

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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0101 markL2 StandardCalculatorParticles
Isotopes of an element have the same
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Salam Academy Original Practice · Proposed mark scheme
SA-AC-AT-0111 markL3 ExamCalculatorConfigurations
Which species has the configuration [Ar] 3d¹⁰?
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Salam Academy Original Practice · Proposed mark scheme