The elements that do not react with dilute hydrochloric acid are those in the activity series below H. Those above H will react with it.
Silver
zinc
Potassium
Raw copper
Gold
Concentrated hydrochloric acid is more reactive than dilute hydrochloric acid. When concentrated hydrochloric acid reacts with magnesium, it produces magnesium chloride and hydrogen gas more quickly and vigorously compared to when dilute hydrochloric acid reacts with magnesium. This is due to the higher concentration of hydrogen ions in concentrated hydrochloric acid, leading to a faster and more intense reaction.
If the acid is hydrochloric acid, HCl, then the products are the metal chloride and hydrogen gas. For example, if magnesium is dropped in hydrochloric acid, the products will be aqueous magnesium chloride and hydrogen gas.
Copper can't be dessolved by the hydrochloric acid.
Acids don't actually melt metal, they oxidize or corrode them. Usually producing the corresponding metal salt and hydrogen gas. Most strong acids (hydrochloric, hydrobromic, hydroiodic, perchloric, nitric, and sulfuric acids) will oxidize metals in this manner. Some weak acids such as hydrofluoric acid can oxidize metals. Some metals, such as the alkali metals and alkaline earth metals will react with virtually any acid and even water. Nitric acid can oxidize copper, which normally doesn't react with acid. Aqua regia, a mixture of nitric acid and hydrochloric acid will oxidize gold and platinum, which are usually considered immune to corrosion.
Carbonic acid gives an acid salt but hydrochloric acid does not
Magnesium
Lithium is the most reactive.
Acid + Reactive Metal -----> Salt + Hydrogen Gas e.g. 2HCl + Zn --------> ZnCl2 + H2
Remember the general acid reaction eq'ns. Acid + Alkali = Salt + Water Acid + Base = Salt + Water Acid + Metal = Salt +Hydrogen Acid + Carbonate = Salt +Water + Carbon Dioxide. So if you react hydrochloric ACID with a METAL it will produce the gas HYDROGEN.
I assume you mean the "most" reactive to metals, and that would be hydrochloric if I'm not mistaken, might be hydrofluoric.
Metal + Acid = Salt + Hydrogen Any metal that reacts with hydrochloric acid will form a metal chloride salt and hydrogen Sodium metal and hydrochloric acid
Hydrochloric acid increases the rate of oxidation of a metal such as magnesium.
hydrochloric acid
Hydrogen and chlorine.
The metal: sodium. The acid: hydrochloric acid.
The chemical formula of hydrochloric acid is HCl; H and Cl are nonmetals.
Hydrogen is displaced from acid when you add a reactive metal.