Lars Fredrik Nilson
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Lars Fredrik Nilson was a Swedish chemist, professor at Uppsala University, and later Director of the Agricultural Chemical Experiment Station at the Royal Swedish Academy of Agriculture and Forestry
Lars Fredrik Nilson
The mineral euxenite.
The element scandium.
The element titanium.
Chemical element
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A chemical element is a species of atom defined by its number of protons. The number of protons is called the atomic number of that element. For example, oxygen has an atomic number of 8: each oxygen
Metals (blue) and metalloids (green) in the periodic table
John Dalton's list of atomic weights & symbols, 1808
Estimated distribution of dark matter and dark energy in the universe. Only the fraction of the mass and energy labeled "atoms" is composed of elements.
Robert Boyle, c. 1740