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1.2 The periodic table

1.2 The periodic table

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Question 7

This question is about elements in Group 7 of the periodic table.

Table 1 shows the melting points and boiling points of chlorine, bromine, and iodine.

ElementMelting point in °CBoiling point in °C
Chlorine-101-35
Bromine-759
Iodine114184
a.

Using Table 1, determine the state of iodine at 150 °C.

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b.

Balance the equation for the reaction between aluminium and iodine:

2Al+‾I2→2AlI3 2\text{Al} + \underline{\quad}\text{I}_2 \rightarrow 2\text{AlI}_3 2Al+​I2​→2AlI3​
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c.

Calculate the relative formula mass (MrM_rMr​) of aluminium iodide, AlI3\text{AlI}_3AlI3​. Relative atomic masses (ArA_rAr​): Al=27\text{Al} = 27Al=27, I=127\text{I} = 127I=127.

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Markscheme

1.2 The periodic table Questions

  1. GCSE
  2. /Chemistry
  3. /1.2 The periodic table

22 exam-style questions on AQA GCSE Chemistry 1.2 The periodic table, covering 1.2.1 The periodic table, 1.2.2 Development of the periodic table, 1.2.3 Metals and non-metals, 1.2.4 Group 0, 1.2.5 Group 1, and 1.2.6 Group 7. Each one has a worked solution and a mark scheme showing where the marks go.

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