Unit 3: Structure 3: Classification of Matter
Topic 3.1: The Periodic Table — Classification of Elements Questions
Practice 6 exam-style questions for IB Chemistry Topic 3.1. Review the question stems below, then unlock the full Question Bank to access markschemes, model answers, and AI grading.
1State2 marks
• Aimnova practice
State the characteristic by which the periodic table is divided into the s, p, d and f blocks, and identify the block that contains the transition metals.
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The element manganese has the electron configuration 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁵ 4s².
Deduce the period and the block of the periodic table in which manganese is found, justifying each answer.
Deduce the period and the block of the periodic table in which manganese is found, justifying each answer.
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Unlock Question3Explain2 marks
• Aimnova practice
Explain why caesium is more reactive than sodium when each reacts with water. [2]
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State the trend in the acid–base nature of the oxides across period 3 (from Na2O to SO3), and identify the oxide that is amphoteric. [2]
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Explain, in terms of nuclear charge and shielding, why the first ionisation energy of argon is greater than that of sodium (both in period 3). [2]
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The atomic radii of lithium, sodium and potassium increase down group 1.
Explain this trend in terms of atomic structure. [2]
Explain this trend in terms of atomic structure. [2]
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