The element niobium was discovered by Charles Hatchett in the year 1801. He discovered the element by analyzing a piece of columbite in a museum's collection.
Niobium was discovered first.
Element anious
Niobium Element number 41. Has a mass of 92.906 amu
England (London)
it is priceless
The element with the atomic number of 20 is calcium. Mass number is the number of protons and neutrons in the nucleus of an atom of a particular isotope, but does not determine which element it is.
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niobium
big and round gas
By C. Hatchett in 1801 in London
Niobium, which was once called "columbium".
Niobium