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The Periodic Table: Classification of Elements · Paper 1 — Free Chemistry SL Practice Questions

1FoundationMCQPeriodic trends: Atomic radius, ionization energy, electronegativity1 markPaper 1~2 min
Going down Group 1 from lithium to potassium, which statement correctly explains the trend in atomic radius?
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Solutions

2FoundationMCQPeriodic trends: Atomic radius, ionization energy, electronegativity1 markPaper 1~2 min
The first ionization energies of Na, Mg, and Al are 496, 738, and 578 kJ mol−1^{-1} respectively. Which statement best explains why the first ionization energy of Al is lower than that of Mg?
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Solutions

3MasteryMCQPeriodic trends: Atomic radius, ionization energy, electronegativity1 markPaper 1~2 min
Atomic radii of selected Period 2 elements are given: lithium = 152 pm and fluorine = 71 pm. Which value is most consistent with the atomic radius of beryllium?
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Solutions

4MasteryMCQGroup classification of elements1 markPaper 1~2 min
An unknown element has the electron configuration [Ar]4s2[\text{Ar}]4s^2. To which group of the periodic table does this element belong?
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Solutions

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