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The Plum Pudding model was the first scientific model of the atom to describe an internal structure. It was first proposed by J. J. Thomson in 1904 following his discovery of the electron in 1897, and was rendered obsolete by Ernest Rutherford 's discovery of the atomic nucleus in 1911.
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.
Thomson atomic model, earliest theoretical description of the inner structure of atoms, proposed about 1900 by William Thomson (Lord Kelvin) and strongly supported by Sir Joseph John Thomson, who had discovered (1897) the electron, a negatively charged part of every atom.
What did the plum pudding model suggest about atoms? The plum pudding model was the first model to suggest that atoms were not the smallest unit of matter, and that they may be made up of both positive and negatively charged subatomic particles.
19 sty 2016 · By 1911, physicist Ernest Rutherford interpreted the Geiger-Marsden experiments and rejected Thomson’s model of the atom. Instead, he proposed a model where the atom consisted of mostly empty ...
6 wrz 2013 · Thomson's atomic theory has informally been called the “plum-pudding” model, but the early history of this expression has not been elucidated. The expression is not in Thomson 1, the seminal paper in which Thomson developed his atomic theory, nor is it in any of his subsequent publications.
The plum pudding model. After discovering the electron in 1897, J J Thomson proposed that the atom looked like a plum pudding close plum pudding modelThe scientific idea that an atom is a...
