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1.2 The periodic table

1.2 The periodic table

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Question 4

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

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

ElementMelting point in °CBoiling point in °C
Fluorine-220-188
Chlorine-101-35
Bromine-759
a.

Using Table 1, determine the state of fluorine at -200 °C.

[1]
b.

Balance the equation for the reaction between iron and chlorine:

2Fe+‾Cl2→2FeCl3 2\text{Fe} + \underline{\quad}\text{Cl}_2 \rightarrow 2\text{FeCl}_3 2Fe+​Cl2​→2FeCl3​
[1]
c.

Calculate the relative formula mass (MrM_rMr​) of iron(III) chloride, FeCl3\text{FeCl}_3FeCl3​. Relative atomic masses (ArA_rAr​): Fe=56\text{Fe} = 56Fe=56, Cl=35.5\text{Cl} = 35.5Cl=35.5.

[2]
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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