sorry my question is explain simply why aluminium is cheaper than gold with reference with the reactivity series.

thanks again for your help

No problem! The reactivity series is a ranking of metals based on how reactive they are. In other words, it shows how easily metals react with other substances. Gold is less reactive than aluminum, which means it does not easily react with other substances.

Aluminum, on the other hand, is more reactive than gold and readily reacts with oxygen in the air to form a protective layer of oxide. This oxide layer prevents further reaction, making aluminum more stable than pure gold.

Now, in terms of pricing, the cost of a metal often depends on its availability and ease of extraction. Since aluminum is more reactive and abundant than gold, it is easier and cheaper to extract. Aluminum can be extracted from its ore, bauxite, through a process called electrolysis, which is relatively cost-effective. Gold, on the other hand, requires more complex and expensive methods of extraction, such as mining and refining.

Therefore, due to the higher reactivity and easier extraction process, aluminum is cheaper than gold.