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CAIE IGCSE Chemistry 8.1.3 Relationship Between Group Number and Questions

Work through real CAIE IGCSE Chemistry questions to infer ion charges and construct formulae for ionic compounds.

Syllabus
2026–2028
Course
Chemistry 0620

Exam points

  • infer ion charges from group positions and outer-shell electrons
  • use charge balance to determine ionic formulae
  • describe electron loss by metals and electron gain by non-metals
  • identify elements that form stable 2+ or 2− ions

CAIE IGCSE Chemistry 8.1.3 Relationship Between Group Number and Questions question 1

[Maximum number: 1]

Metal X reacts with non-metal Y to form an ionic compound with the formula X2YX_{2} Y.
Which statements are correct?
1 X is in Group I of the Periodic Table.
2 X is in Group II of the Periodic Table.
3 Y is in Group VI of the Periodic Table.
4 Y is in Group VII of the Periodic Table.

A

1 and 3

B

1 and 4

C

2 and 3

D

2 and 4

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