Question

In the activity series, a metal occurring above hydrogen is _________ reactive than hydrogen and a metal occurring below hydrogen is __________ reactive than hydrogen.

• A. more
• B. less

Answer 1

Activity series: Activity series is the arrangement of metal in a tabular form in the decreasing order of their reactivity.

• The metal present at a higher position can displace the element which is present below that element in the activity series.
• Here potassium is the most reactive metal and platinum is the least reactive metal in this series.
• So here metals above hydrogen are more reactive metals and metals below hydrogen are less reactive metals.

Therefore, In the activity series, a metal occurring above hydrogen is more reactive than hydrogen and a metal occurring below hydrogen is less reactive than hydrogen.