(銀食金) 是否真?

Theoretically, it should be gold 'eat' silver.

It is because silver is located higher than gold in the reactivity series, i.e. silver is more reactive than gold. Silver loses electrons more readily than gold does. When the two metals are put together, silver will prevent gold from being corroded by donating electrons, and silver itself will be corroded. This is sacrificial protection.

However, in real life, this is not likely to happen. It is because the two metals are quite unreactive. They will exist as a free element in air for quite a long time.

Reactivity series:

圖片參考：http://www.wpbschoolhouse.btinternet.co.uk/page03/3_33reactivity/reactivityfinal1.gif


圖片參考：http://www.wpbschoolhouse.btinternet.co.uk/page12/gifs/ReactivitySeriesList.gif

不會的.
因為在空氣中,金同銀係無法發生反應.
而且金同銀都唔活潑.所以應該唔會有咩銀食金.