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Hace 3 días · J. J. Thomson’s plum pudding model accounted for the presence of negatively charged particles in the atom, which we call “electrons.” Geiger, Marsden, and Ernest Rutherford demonstrated the existence of the nucleus, a dense, positively charged part of the atom in the very center of it.
Hace 1 día · Electrons and a compact nucleus of protons and neutrons. Atoms are the basic particles of the chemical elements. An atom consists of a nucleus of protons and generally neutrons, surrounded by an electromagnetically bound swarm of electrons. The chemical elements are distinguished from each other by the number of protons that are in their atoms.
- 1.67×10−27 to 4.52×10−25 kg
- zero (neutral), or ion charge
Hace 2 días · Not until the late 19th century did any understanding of individual particles come about, with J.J. Thomson's plum pudding model of the atom as a neutral composite consisting of individual negative particles or electrons embedded in a blob of positive charge.
Hace 2 días · Lord Kelvin. It is believed the "PNP" in his signature stands for "Professor of Natural Philosophy". Kelvin also wrote under the pseudonym "P. Q. R." William Thomson, 1st Baron Kelvin, OM, GCVO, PC, FRS, FRSE (26 June 1824 – 17 December 1907) [7] was a British mathematician, mathematical physicist and engineer born in Belfast. [8]
Hace 5 días · Thomson suggested the atom's plum pudding model, which had negatively charged electrons trapped in a "soup" filled with positive effects. Thomson was "wrong" because he assumed that the positive charge of an atom was all one uniform blob of matter with the electrons moving in orbits inside the nucleus.
Hace 4 días · On the basis of Thomson’s model of an atom, explain how an atom as whole is neutral. Hint : The Thomson’s model was found when JJ Thompson performed his cathode ray tube experiment which gave some results, giving a plum pudding model of the atom in which electrons floated in a soup of diffused positive charges.
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