Question

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Answer 1

Answer:

True, the model had to change as new information came to light.

After the invention of new instruments, it enable us to do more research and verify old theories.

Dalton atomic theory states that matter is composed of very small particles called atoms which is indivisible. Indivisible means cannot be broken down into simpler substances. But Rutherford performed an experiment and concluded that atom is divisible into proton, electron and neutron. Electron is present in the shell while proton and neutron are present inside the nucleus of an atom.