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1.2 The periodic table

1.2 The periodic table

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Question 6

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.

Table 1

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

Using Table 1, determine the physical state of chlorine at −50 ∘C-50\text{ }^{\circ}\text{C}−50 ∘C. Give a reason for your answer.

[1]
b.

Balance the equation for the reaction between iron and bromine:

2Fe+‾Br2→2FeBr3 2\text{Fe} + \underline{\quad}\text{Br}_2 \rightarrow 2\text{FeBr}_3 2Fe+​Br2​→2FeBr3​
[1]
c.

Calculate the relative formula mass (MrM_rMr​) of iron(III) bromide, FeBr3\text{FeBr}_3FeBr3​. Relative atomic masses (ArA_rAr​): Fe=56\text{Fe} = 56Fe=56, Br=80\text{Br} = 80Br=80.

[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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