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2.1 Chemical bonds, ionic, covalent and metallic

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Question 11
H

Potassium oxide has the formula K2O\text{K}_2\text{O}K2​O. Which describes the ions in potassium oxide?

[1]
A

K2+\text{K}^{2+}K2+ ions and O2−\text{O}^{2-}O2− ions in a 1:11:11:1 ratio

B

K+\text{K}^+K+ ions and O−\text{O}^-O− ions in a 2:12:12:1 ratio

C

K+\text{K}^+K+ ions and O2−\text{O}^{2-}O2− ions in a 2:12:12:1 ratio

D

K+\text{K}^+K+ ions and O2−\text{O}^{2-}O2− ions in a 1:21:21:2 ratio

Markscheme

2.1 Chemical bonds, ionic, covalent and metallic Questions

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

40 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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