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Look at the data about four elements - OCR Gateway - GCSE Chemistry - Question 2 - 2018 - Paper 1
Question 2
Look at the data about four elements. Element Melting point (°C) Density (g/cm³) Ions formed A 98 0.97 A⁺ B −101 0.0032 B⁻ C 1533 7.9 C²⁺, C³⁺ D 660 2.7 D³⁺ Which ... show full transcript
Worked Solution & Example Answer:Look at the data about four elements - OCR Gateway - GCSE Chemistry - Question 2 - 2018 - Paper 1
Step 1
Which element is a transition element?
Answer
To determine which element is a transition element from the given data, we need to identify the characteristics of transition elements. Transition metals typically have variable oxidation states and are often capable of forming colored compounds.
From the provided data, Element C has a melting point of 1533 °C, a high density of 7.9 g/cm³, and forms ions C²⁺ and C³⁺. These factors suggest that Element C is likely a transition metal because it has multiple oxidation states.
In contrast, the other elements (A, B, and D) show less likely characteristics of transition metals. For instance, Element A is a metal with a relatively low melting point, and Element B has a very low melting point and density.
Thus, the answer is:
Element C is the transition element.