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Which metal is placed at the top of the reactivity series?
Iron
Copper
Silver
Potassium
Potassium
Remember the mnemonic 'Please Stop Calling Me A Careless Zebra Instead Try Learning How Copper Saves Gold' to recall the reactivity series order.
Remember the mnemonic 'Please Stop Calling Me A Careless Zebra Instead Try Learning How Copper Saves Gold' to recall the reactivity series order.
Analyze Reactivity Series
The reactivity series ranks metals by their tendency to lose electrons. Potassium (K) is an alkali metal located at the very top, meaning it is highly reactive and readily undergoes displacement reactions.
Evaluate Options
Comparing the given metals: Potassium (K) > Iron (Fe) > Copper (Cu) > Silver (Ag). Based on this standard electrochemical series, Potassium is the most reactive.
A: Iron is a moderately reactive metal found in the middle of the series; B: Copper is less reactive than iron and sits below it; C: Silver is a noble metal with low reactivity, placed near the bottom of the series.
D is correct because Potassium (K) is the most reactive metal among the options provided, occupying the topmost position in the standard reactivity series.
Always remember the order of the first five: Potassium (K), Sodium (Na), Calcium (Ca), Magnesium (Mg), and Aluminium (Al) as they frequently appear in chemistry-based reasoning questions.
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