What is the major difference between the Bohr model and the cloud model?
No electrons do not orbit the nucleus like planets
Thomson
Atoms contain negatively charged particle called electron /Atoms have no electrical charge
Rutherford experiment
Rutherford concluded that the atom is mostly empty space /has a dense, positive charge at its center. This dense center is called the nucleus. (The plural of n
A modern model in atom
Chadwick showed that another particle exists in the nucleus of atoms. This particle is called a neutron.
Bohr model
electrons move only in specific orbits around an atom's nucleus, each has specific energy
Thomson model
to a scoop of chocolate chip ice cream.
Atomic theory
is a series of models that developed from experimental evidence
Dalton
Atom is the smallest unbreakable unit of matter /An atom of one element cannot be
changed into an atom of a different element by a chemical reaction./
Why did it take time to discover the neutron?
it has no charge
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