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4.1 Predicting chemical reactions

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Question 16
F

Element X has an atomic number of 38. Element Y has an atomic number of 53.

X and Y react together to form a compound.

Use the Periodic Table to predict the formula of the compound and the ions it contains.

[1]
A

The formula is XY\mathrm{XY}XY, and it contains X+\mathrm{X^{+}}X+ ions.

B

The formula is X2Y\mathrm{X_{2}Y}X2​Y, and it contains Y2−\mathrm{Y^{2-}}Y2− ions.

C

The formula is XY2\mathrm{XY_{2}}XY2​, and it contains X2−\mathrm{X^{2-}}X2− ions.

D

The formula is XY2\mathrm{XY_{2}}XY2​, and it contains X2+\mathrm{X^{2+}}X2+ ions.

Markscheme

4.1 Predicting chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /4.1 Predicting chemical reactions

60 exam-style questions on OCR GCSE Chemistry 4.1 Predicting chemical reactions, covering 4.1.1 Properties and trends in Groups 1, 7 and 0, 4.1.2 Properties of the transition metals, 4.1.3 Reactivity predicted from position in the Periodic Table, and 4.1.4 Reactivity of metals and the reactivity series. Each one has a worked solution and a mark scheme showing where the marks go.

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