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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.
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What is the Thomson model?
The plum pudding model was the first scientific model of the atom with internal structure. It was first proposed by J. J. Thomson in 1904 following his discovery of the electron in 1897, but it was subsequently rendered obsolete by Ernest Rutherford 's discovery of the atomic nucleus in 1911.
- 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
May 30, 2021 · According to J.J. Thomson's atomic model, the atom consists of electrons placed in a positively charged "soup,” which compensates for the electrically negative charges of the electrons. According to this model, electrons could spin freely in a drop or cloud of such a positively charged substance.
Jan 19, 2016 · This was the basis of the atomic theory devised by English physicist J.J. Thompson in the late 19th an early 20th centuries. As part of the revolution that was taking place at the time,...
Jun 2, 2024 · J.J. Thomson’s Plum Pudding Model was one such description of an atom, which was at that time deemed the most fundamental constituent of matter.
J.J Thomson contributed massively to the model of the atom and the modern day theory. His work involved the use of cathode ray tubes and identifying a particle lighter than the atom itself, the electron.
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