Answer :
(4) zinc
Zinc is higher in the activity series than hydrogen, copper, gold, and silver
Zinc is higher in the activity series than hydrogen, copper, gold, and silver
Answer: Option (4) is the correct answer.
Explanation:
According to the reactivity series, zinc is the most reactive as compared to hydrogen, silver and copper.
Whereas hydrogen is more reactive than copper which is more reactive than silver.
Therefore, we can conclude that out of the given options zinc is the element that reacts spontaneously with 1.0 M HCl(aq) at room temperature, is the correct option.
