No, there is no element named "stell". Nor to the best of my knowledge, are there ANY compounds called 'stell".
Perhaps you mis-typed it and you meant "steel"? Steel is an alloy of primarily iron, plus some cobalt, carbon and manganese and a couple of other elements depending on the grade of steel.
He stands for helium which is a pure element
Pure gold is an element.
Uranium is a natural chemical element, a pure element.
Yes, scandium is a pure element.
A chemical element is pure.
All elements are pure substances.
Californium is a pure element.
pure element
Pure gold is an element. (AU)
Plutonium is a pure chemical element.
Yes, an element is a pure substance. An element is composed of only one type of atom. There are no other substances in it. So an element is a pure substance.
silicon is a pure substance because it is an element and as we know an element is a pure substance