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2.1 Chemical bonds, ionic, covalent and metallic

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Question 3

A scientist investigates three samples made from elements represented by the letters P, Q and R. The letters are codes and are not chemical symbols.

ElementType of elementElectronic structure
Pmetal2,1
Qnon-metal2,5
Rnon-metal2,6
SampleElements presentStructural evidence
AP onlya regular, repeating giant structure
BQ onlyseparate particles, each containing two Q atoms
CP and Ra regular, repeating giant structure with a P:R ratio of 2:1

Describe how the outer-shell electrons of P, Q and R are involved in holding each of samples A, B and C together, and how this accounts for the structural evidence in the table.

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2.1 Chemical bonds, ionic, covalent and metallic Questions

  1. GCSE
  2. /Chemistry
  3. /2.1 Chemical bonds, ionic, covalent and metallic

98 exam-style questions on AQA GCSE Chemistry 2.1 Chemical bonds, ionic, covalent and metallic, covering 2.1.1 Chemical bonds, 2.1.2 Ionic bonding, 2.1.3 Ionic compounds, 2.1.4 Covalent bonding, and 2.1.5 Metallic bonding. Each one has a worked solution and a mark scheme showing where the marks go.

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