What is the difference between the plum pudding and the nuclear model of an atom?

Answer 1

- Plum pudding model: electrons are included in a positive sphere.
- The Bohr model consider that electrons are in a continuous movement around the atomic nucleus.

Answer 2

In Thomson's plum pudding atomic model, the atom is composed of electrons (which Thomson called "corpuscles") surrounded by a soup of positive charge to balance the electron's negative charge. The electrons were thought to be positioned throughout the atom, but with many structures possible for positioning multiple electrons. It is important to note that this was before the discovery of the atomic nucleus.

In the Rutherford model, the atom is made up of a central charge (this is the modern atomic nucleus (though Rutherford did not use the term "nucleus" in his paper) surrounded by a cloud of orbiting electrons.

So basically the same thing except that Thompson's didn't have a nucleus and Rutherford's did. Also, Thompson's had electrons surrounding the positive charge, while Rutherford has them in rings around the nucleus.

Answer 3

Thompson thought the protons & electrons were both distributed as a mixture within a sphere. Rutherford's experiments led him to conclude that only the protons formed a spherical core or nucleus and the electrons were outside the nucleus, in orbit around it.

Answer 4

Sir J.J. Thompson, a renowned British scientist who actually â??discoveredâ?? the electron (the negative atomic particle), proposed his model of atomic structure in 1904, before the atomic nucleus was actually discovered. Thompson viewed the atom as a cloud-like mass in which the negatively-charged electrons (which he called â??corpusclesâ??) moved in rotating rings through a positively-charged â??soupâ??. This model was likened to an English dessert called a plum pudding, analogizing electrons with the raisins randomly scattered through the interior of the pudding. This model of atomic structure was largely discarded in 1911, based on discoveries made by Sir Ernest Rutherford. Rutherford was another important British physicist, and he amended, rather than disproved, Thompsonâ??s plum pudding model of atomic theory in 1911. He directed a series of experiments that detected a positively-charged central mass in the atom (eventually named the nucleus), around which the negatively-charged electrons moved. It is very similar to Thompsonâ??s plum pudding model, except that the electrons orbit the nucleic center, rather than throughout the atomic structure independently. The biggest differences in the theories lie in the distribution of the negatively- electrons and the presence of a central, positively-charged, massâ??the nucleus. What became known as the Rutherford-Bohr Model of atomic structure is what we envision when we think of what an atom â??looks likeâ??.

Answer 5

Rutherfords model had a positive nucleus at the centre of the atom surrounded by electrons. Thomsons had electrons moving through a "sea of positive charge", sometimes called the plum pudding model.

Answer 6

Atoms are spherical in nature and contain electrons.

Answer 7

He dicovered (to his amazement) that practically all the mass of an atom is concentrated in an extremely tiny point in the centre (now known as the nucleus) of the atom.

Answer 8

in plum pudding model there was no nucleus however in the nuclear model of an atom there is a nucleus.

in plum pudding model there were no shells or orbits while in nuclear model of an atom there are shells or orbits present.