Search results
The plum pudding model is an obsolete scientific model of the atom. It was first proposed by J. J. Thomson in 1904 [1] following his discovery of the electron in 1897 and subsequently rendered obsolete by Ernest Rutherford 's discovery of the atomic nucleus in 1911.
Popularly known as the plum pudding model, it had to be abandoned (1911) on both theoretical and experimental grounds in favour of the Rutherford atomic model, in which the electrons describe orbits about a tiny positive nucleus. See also atomic model.
- The Editors of Encyclopaedia Britannica
Aug 4, 2022 · Following the discovery of the electron, J.J. Thomson developed what became known as the "plum pudding" model in 1904. Plum pudding is an English dessert similar to a blueberry muffin. In Thomson's plum pudding model of the atom, the electrons were embedded in a uniform sphere of positive charge, like blueberries stuck into a muffin.
Key points. J.J. Thomson's experiments with cathode ray tubes showed that all atoms contain tiny negatively charged subatomic particles or electrons. Thomson's plum pudding model of the atom had negatively-charged electrons embedded within a positively-charged "soup."
- The angle of deflection in the thomson experiment depends on the e/m value. This is because F = ma So a = F/m F is proportional to e So a is propor...
- @Afeefdk Because they very different experiments...Look at both the experiments. In the Thomson's experiment, J.J Thompson didn't strike the cathod...
- Rutherford was interested in radio-chemistry (radioactivity) and what it might reveal about the atom. is focus was on alpha particles (from alpha r...
- Because he used classical physics (although he quantized the angular momentum) to conceive his model....and classical physics is based on intuitive...
- The negatively charged electrode is the anode, this is where the electrons in a current originate. The positively charged electrode is the cathode...
- He put the radium in a container with only one 'hole' for the alpha particles to get out. Any alpha particles going in other directions simply don'...
- You are right, both kinds of rays are emitted simultaneously. the cathode rays consist of electrons, while the anode/canal rays are the positively...
1. Who came up with the plum pudding model? J. J. Thomson created the plum pudding model. 2. Is the plum pudding model correct? While the plum pudding model was the first to suggest that atoms are made up of charged particles, the plum pudding model is not entirely correct.
Jun 18, 2023 · A plum pudding model is a historical scientific model of the atom that was proposed by J.J. Thomson in 1904, shortly after he discovered the electron. The model tried to explain two properties of atoms that were known at that time: electrons are negatively charged particles,…
People also ask
What is a plum pudding atom?
What is a plum pudding model?
How many electrons are in a plum pudding atom?
Why was the plum pudding model abandoned?
Oct 19, 2023 · According to calculations, the particle was found to be tremendously tiny, at least 1000 times smaller than an atom itself. Thomson had discovered the electron. The name, however, was coined by G.J. Stoney. Thomson, in fact, referred to this object as “the negative corpuscle”.
