explain Rutherford Model of atom? give its draw backs?
Answers
Answer:
Rutherford atomic model failed to explain about the stability of electrons in a circular path. As per Rutherford's model, electrons revolve around the nucleus in a circular path. ... Eventually, electrons should lose energy and fall into the nucleus. And this points to the instability of the atom.
Answer:
The Rutherford model was devised by the New Zealand-born physicist Ernest Rutherford to describe an atom.
Rutherford overturned Thomson's model in 1911 with his well-known gold foil experiment in which he demonstrated that the atom has a tiny and heavy nucleus. Rutherford designed an experiment to use the alpha particles emitted by a radioactive element as probes to the unseen world of atomic structure. If Thomson was correct, the beam would go straight through the gold foil. Most of the beams went through the foil, but a few were deflected.
Observations:
- Nucleus is very small in size, carries positive charge and in which the entire mass of the atom is concentrated.
- Since electrons have negligible mass ,the mass of the atom is mainly due to protons and neutrons.
- Protons and neutrons must be present in the nucleus.
Drawbacks:
- Rutherford's model was unable to explain the stability of an atom.
- The electromagnetic radiation will have energy from the electronic motion as a result of which the orbits will gradually shrink.
- Rutherford’s theory was incomplete because it did not mention anything about the arrangement of electrons in the orbit. This was one of the major drawbacks of Rutherford atomic model.