Question

what is the chemical name and formula, of rust?

Answer 1

Its hydrated ferric oxide and its formula is Fe2O3. xH2O

Answer 2

Given that,

The element of rust.

We know that,

The rust is the general name of iron oxides.

When iron reacts with oxygen in the appearance of water then red oxides formed.

The chemical formula of rust is $Fe_{2}O_{3}$ which is called iron oxide .

Hence, The chemical name of rust is $Fe_{2}O_{3}$.