It was not discovered as it did not then exist, we had to invent it ourselves.
It was actually Max Planck and others who 'quantized' matter, and even light, after Newton and Boscovitch.
The first theory to relate chemical changes to events at the atomic level was proposed by John Dalton in the early 19th century. Known as Dalton's atomic theory, it stated that elements are composed of indivisible particles called atoms, and chemical reactions involve the rearrangement of these atoms to form new substances.
The first modern atomic theory was proposed by John Dalton in the early 19th century. Dalton's theory stated that all matter is made up of tiny, indivisible particles called atoms, and that atoms of different elements have different masses and properties.
john dalton develop an atomic theory in 1803, based on idea of the atomic exsiting
Mendeleev's contribution to the atomic theory was published in 1869 in his book "Principles of Chemistry." In this work, he introduced the periodic table of elements, organizing them by atomic weight and properties, and leaving gaps for undiscovered elements.
The atomic theory of matter can be attributed to the ideas proposed by the ancient Greek philosopher Democritus. He hypothesized that all matter is composed of indivisible and indestructible particles called atoms, which differ in shape, size, and arrangement. Democritus' atomic theory laid the foundation for modern atomic theory.
The scientist who first introduced the atomic theory was John Dalton in the early 19th century. Dalton's atomic theory proposed that all matter is made up of tiny, indivisible particles called atoms, each with its own unique properties. His work laid the foundation for modern atomic theory.
John Dalton first pursued research into atomic theory. He was the first person to propose the existence of the atomic structure.
John Dalton first pursued research into atomic theory. He was the first person to propose the existence of the atomic structure.
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john dalton developed the atomic theory , which he published in 1803
Niels Bohr developed his atomic theory in 1913. This theory introduced the idea that electrons orbit the nucleus in specific energy levels, which was a major advancement in understanding the structure of atoms.
Moseley was the first to clear and scientifically justify in 1913 the atomic number studying X-ray spectra of chemical elements. But Moseley hadn't a personal atomic theory, he was not the discoverer of the atomic theory.
scientific method used in the development of atomic theory
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john dalton
Moseley was the first to clear and scientifically justify in 1913 the atomic number studying X-ray spectra of chemical elements. But Moseley hadn't a personal atomic theory, he was not the discoverer of the atomic theory.
He started working on the atomic theory in 1892. He developed the Saturnian Model in 1904.