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Atom - Coggle Diagram
Atom
1909 - 1913
Niels Bohr (Danish physicist) He proposed a theory for the hydrogen atom based on quantum theory, in which electrons circulate about a nucleus but only in prescribed orbits. 
Henry Moseley (English scientist) He established a methodical relationship between wave length and atomic number. Moseley's Law is the name given to this discovery.
[ Planetary Atomic Model ] This model of atom is described as a tiny, dense, positively charged core called a nucleus, in which nearly all of the mass is concentrated, and around which the light, negative constituents known as electrons circulate at some distance, similar to planets revolving around the Sun.
[Atom model Nuclear ] In this model the protons and neutrons, which make up nearly all of the mass of the nuclear atom, are found in the nucleus, which is located at the center of the atom. The electrons are distributed around the nucleus and take up the majority of the atom's volume.
Robert Millikan (American physicist
University of Chicago) He was a scientist who used the oil-drop experiment to discover the elementary charge of an electron.
Ernest Rutherford (New Zealand scientist) He discovered that the atom is mostly empty space, with the majority of its mass concentrated in a central positively charged nucleus.
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