The chemical symbol of aluminum, a pure element, is Al . Aluminum metal is a pure element, but most aluminum is commonly used as an alloy, a mixture of aluminum and other metals, often with copper, zinc, manganese, silicon, or magnesium. Do note that aluminum is always coated with a protective layer of aluminum oxide (Al 2 O 3 ), resulting in it not reacting with steam even though it is very reactive. This takes place naturally and the only way to stop it is to deprive it from oxygen which is not necessary since the protective layer is what makes it commonly used (or it might react with the gravy or the steam from freshly warmed food)
Aluminum does NOT have a chemical formula because it's an element but it has a symbol - Al and a charge of +2 which means it has 2 more protons(positively charged subatomic particles) than the electrons(negatively charge subatomic particles). if there is an equal amount of electrons and protons then the element is neutral because the positives and negatives balance out each other.
Aluminum is a light weight silver colour metal with chemical symbol 'Al'.In periodic table it appears in the group of 'other metals'.
It is the third most common element after oxygen and silicon. Also it is the most plentiful metal in earth's crust.
Some properties of pure aluminium are given below.
Atomic number ... 13
Atomic weight ... 26.9815
Density ... .... 2.7 g/cc
Melting point ... 660.2 degrees C
Aluminium has very good strength to weight and strength to electrical conductivity. This makes aluminium suitable for many application in engineering, construction and electrical industry applications.