Based on the activity series, rank the following metals from most reactive (1) to least reactive (3): silver, strontium, technetium.

• A. 1. strontium, 2. technetium, 3. silver
• B. 1. technetium, 2. strontium, 3. silver
• C. 1. technetium, 2. silver, 3. strontium
• D. 1. silver, 2. technetium, 3. strontium

Answer: (A)

Verified step by step guidance

1. Understand that the activity series is a list of metals ranked by their reactivity, especially their tendency to lose electrons and form positive ions in chemical reactions.
2. Recall that metals higher in the activity series are more reactive, meaning they more readily undergo oxidation and displace metals lower in the series from their compounds.
3. Identify the metals given: silver (Ag), strontium (Sr), and technetium (Tc), and locate their positions on a standard activity series chart.
4. Compare their positions: strontium is an alkaline earth metal and typically very reactive, technetium is a transition metal with moderate reactivity, and silver is a noble metal known for low reactivity.
5. Rank the metals from most reactive (1) to least reactive (3) based on their relative positions in the activity series: the metal highest on the list is 1, the next is 2, and the lowest is 3.