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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. The model tried to account for two properties of atoms ...
Jun 18, 2023 · The plum pudding model was an early attempt to explain the atom by J.J. Thomson in 1904. It suggested that an atom consists of a sphere of positive charge with electrons embedded in it. The model tried to account for the properties of atoms and matter, but it failed to explain some phenomena and experiments. It was soon replaced by Rutherford ...
- Thomson Model Introduction
- Table of Contents
- Postulates of Thomson’s Atomic Model
- Limitations of Thomson’s Atomic Model
Thomson atomic modelwas proposed by William Thomson in the year 1900. This model explained the description of an inner structure of the atom theoretically. It was strongly supported by Sir Joseph Thomson, who had discovered the electron earlier. During cathode ray tube experiment, a negatively charged particle was discovered by J.J. Thomson. This e...
Postulate 1: An atom consists of a positively charged sphere with electrons embedded in it Postulate 2: An atom as a whole is electrically neutral because the negative and positive charges are equal in magnitude Thomson atomic model is compared to watermelon. Where he considered: 1. Watermelon seeds as negatively charged particles 2. The red part o...
It failed to explain the stability of an atom because his model of atom failed to explain how a positive charge holds the negatively charged electrons in an atom. Therefore, This theory also failed...Thomson’s model failed to explain the scattering of alpha particles by thin metal foilsNo experimental evidence in its support- 32 sec
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. Though several alternative models were advanced in the 1900s by Kelvin ...
- The Editors of Encyclopaedia Britannica
Jan 19, 2016 · The Plum Pudding Model, which was devised by J.J. Thompson by the end of the 19th century, was a crucial step in the development of atomic physics
Jun 2, 2024 · The model, British physicists recognized, was reminiscent of a plum pudding, a dessert adored by the British. The electrons were the negative plums embedded in a positive pudding. The name stuck, and the model is still commonly referred to as the Plum Pudding Model. However, it is also often called the Watermelon Model.
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After discovering the electron in 1897, J J Thomson proposed that the atom looked like a plum pudding close plum pudding model The scientific idea that an atom is a sphere of positive charge, with ...
