Respuesta :
Ernest Rutherford model :- Rutherford directed the Geiger-Marsden experiment in 1909 which suggested upon Rutherford's 1911 analysis , that Thomsan' plum pudding model of the atom was incorrect.
Rutherford's new model for atoms based on the experimental results ,contained new features of relatively high central charge concentrated into a very small volume un comprision to rest of the atom and with this central volume also containing the bulk of atomic mass of the atom. This region would be known as nucleus.
Rutherford's experiment:- A famous experiment "gold foil experiment" in which Rutherford observed that the the atom has a tiny and heavy nucleus. He designed an experiment to use the alpha particles emitted by radioactive element. He saw that most of the beams went straight through the foil but a few were deflected.
Rutherford propose his own physical model for sub atomic structure on the basis of his experimental observation. In this, the atom is made up of a central charge surrounded by cloud of orbiting electrons. Later the region of Central charge names as nucleus. Rutherford didn't use the word nucleus.
After Rutherford's discovery scientists started to realise that the atom is not a single particle, but it is made up of far smaller subatomic particles. Scientists eventually discovered that atoms have positively charged nucleus in the center. Later scientists also found expected number of electrons in atom by using x-ray.
Learn more about atom here:
https://brainly.com/question/6258301
#SPJ4
