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WAEC Chemistry 2025 Theory — Question 18

Question 18 of 70 from the West African Examinations Council (WAEC) Chemistry 2025 Theory paper, with the correct answer and a full explanation.

1(j)(i). Arrange the following metals in order of increasing reactivity: Pb; Zn; Mg; Na; Ag.

Model answer

Ag < Pb < Zn < Mg < Na

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