Where is the density of an atom concentrated?
In 1909, Hans Geiger and Ernest Marsden, under the direction of Ernest Rutherford, bombarded a metal foil with alpha particles to observe how they scattered. They expected all the alpha particles to pass straight through with little deflection, because Thomson's model said that the charges in the atom are so diffuse that their electric fields could not affect the alpha particles much. However, Geiger and Marsden spotted alpha particles being deflected by angles greater than 90°, which was supposed to be impossible according to Thomson's model. To explain this, Rutherford proposed that the positive charge of the atom is concentrated in a tiny nucleus at the center of the atom.
Where is most of an atom's density concentrated?
Nucleus
Atom
No context provided
Where is the least amount of an atom's density concentrated?
electron cloud
Atom
https://en.wikipedia.org/wiki/Atom
An atom is the smallest unit of ordinary matter that forms a chemical element.
Atom
An atom is the smallest unit of ordinary matter and its density is concentrated in a tiny nucleus at the center of the atom. The least amount of density that is concentrated is located in the electron cloud. 