The correct answer is option B) ie When metal X is placed in a solution of Z sulfate, a reaction occurs.
- The metals in the reactivity series are ordered in descending order of reactivity.
- The difference in stability between metals' electron configurations as atoms and as ions accounts for their reactivity. They will all react to produce positive ions because they are all metals.
- In this question, this is given that X is more reactive than Y which is more reactive than Z
- So, we can place them in reactivity series as X>Y>Z
- This means that X can displace Y and Z . Y can displace Z. Z cannot displace any of the other two.
Hence, the correct answer is option B) When metal X is placed in a solution of Z sulfate, a reaction occurs.
Learn more about the reactivity series here:
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