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Ionic bonding

Ionic bonding

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Question 4

Calcium and fluorine react to form the ionic compound calcium fluoride.

The chemical equation for this reaction is:

Ca+F2→CaF2 \text{Ca} + \text{F}_2 \rightarrow \text{CaF}_2 Ca+F2​→CaF2​
a.

Write a word equation for this reaction.

[1]
b.

Describe the changes in electronic configurations when calcium reacts with fluorine to form the ionic compound calcium fluoride (CaF2\text{CaF}_2CaF2​). Include the electronic configurations of the atoms and the resulting ions, and show the charges on the ions. (Atomic numbers: Ca=20\text{Ca} = 20Ca=20, F=9\text{F} = 9F=9)

[4]
c.

Calculate the mass of calcium fluoride (CaF2\text{CaF}_2CaF2​) that forms when 1.20 g1.20\text{ g}1.20 g of calcium reacts completely with fluorine. (Relative atomic masses, ArA_rAr​: Ca=40\text{Ca} = 40Ca=40, F=19\text{F} = 19F=19)

[4]
Markscheme

Ionic bonding Questions

  1. IGCSE
  2. /Chemistry
  3. /Ionic bonding

11 exam-style questions on Edexcel IGCSE Chemistry Ionic bonding. Each one has a worked solution and a mark scheme showing where the marks go.

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