第 1 题
1 分Which of the following is a characteristic chemical property of the first set of transition elements, from \(Sc\) to \(Cu\), that distinguishes them from s-block metals such as calcium?
GCE A-Level - Higher 2 (H2) · Chemistry (9476)
General physical and characteristic chemical properties of the first set of transition elements, scandium to copper：练习题
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第 2 题
1 分Which of the following best explains why the atomic radii and first ionisation energies of the first-row transition elements (from Sc to Cu) remain relatively invariant across the period?
第 3 题
1 分Which of the following statements correctly describes a general physical property of the first row transition elements, from \(Ti\) to \(Cu\), compared to the s-block element calcium (\(Ca\))?
第 4 题
2 分State what is meant by the term transition element in terms of its d-subshell configuration.
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第 5 题
6 分Explain why the first set of transition elements readily exhibits variable oxidation states, and write the balanced ionic half-equation for the oxidation of \(Fe^{2+}\) to \(Fe^{3+}\) by acidified \(MnO_4^{-}\).
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第 6 题
5 分Explain, in terms of electronic configuration and shielding, why the increase in density and the relatively invariant atomic radii of the first row transition metals (\( \text{Sc} \) to \( \text{Cu} \)) contrast sharply with the trend seen from potassium to calcium across the s-block.
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