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CAIE IGCSE Chemistry Ions and Ionic Bonding Questions

Practise tracking electron transfer, constructing ionic formulae and explaining ionic lattice structure, bonding, melting point and electrical conduction.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • show electron transfer and use resulting ion charges to construct a neutral ionic formula
  • define ionic bonding as strong electrostatic attraction between oppositely charged ions
  • link a giant ionic lattice to high melting point and conduction only when ions can move

Covered syllabus points

2.4.1—Formation of positive ions, known as2.4.2—An ionic bond is a strong2.4.3—Formation of ionic bonds between2.4.4—Properties of ionic compounds: (a)2.4.5—Giant lattice structure of ionic2.4.6—Formation of ionic bonds between ions2.4.7—Ionic compound properties from

2.4 Ions and ionic bonds question 1

[Maximum number: 9]

The Periodic Table is a method of classifying elements.

Question (a)

(a)

Calcium is in Group II and chlorine is in Group VII of the Periodic Table.

Explain, in terms of number of outer shell electrons and electron transfer, how calcium atoms and chlorine atoms form ions. Give the formulae of the ions formed.

[ 5 ]

Question (b)

(b)

Lithium fluoride has ionic bonding.

[ 4 ]

Question (i)

(i)

What is an ionic bond?

[ 2 ]

Question (ii)

(ii)

Give two physical properties of ionic compounds.

[ 2 ]

2.4 Ions and ionic bonds question 2

[Maximum number: 3]

Fluorine and chlorine are halogens.

Lithium chloride, LiCl , is an ionic compound.

Complete the dot-and-cross diagram to show the electron arrangement and charges of the ions in lithium chloride.

Figure for Question 2.4 Ions and ionic bonds question 2 — CAIE IGCSE Chemistry
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