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2.1 Chemical bonds, ionic, covalent and metallic

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Question 30

Sodium is a Group 1 metal and oxygen is a Group 6 non-metal. The elements react to form sodium oxide, Na2O\text{Na}_2\text{O}Na2​O.

Which describes the electron change undergone by each oxygen atom?

[1]
A

Oxygen receives two electrons from sodium atoms, making its outer shell full.

B

Oxygen transfers two electrons to sodium, exposing a full shell beneath.

C

Oxygen receives one electron because sodium is in Group 1, leaving its outer shell incomplete.

D

Oxygen shares an electron with each sodium atom, so all the atoms remain neutral.

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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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