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In 1897, Joseph John Thomson (1856-1940) had announced the discovery of a corpuscle. Others soon called it ► electron, despite Thomson's stubborn preference for his original term, borrowed from Robert Boyle (1627-91) to denote any particlelike structure. Very soon afterwards, Thomson began to think about how to explain the periodicity of properties of the chemical elements in terms of these negatively charged corpuscles as atomic constituents. Chemical properties would thus have to depend on the number and constellations of these corpuscles inside the atom. They would have to have stable positions in it, bound by electrostatic and possibly kinetic forces. Because under normal conditions chemical atoms are electrically neutral, the total electric charge of all these negatively charged electrons had to be compensated for by an equal amount of positive charge. For Thomson it was natural to assume that this positive charge was continuously distributed throughout the atom, whose radius was estimated at the time to be around 10−12 m. The very small negatively charged electrons (contemporary estimates indicated an order of magnitude of 10−15 m) were distributed in the atom like raisins inside a cake or like plums in a pudding, whence the popular nickname for Thomson's atomic model as the "plum pudding model".
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What did the pudding represent in the plum pudding model?
Thomson's plum pudding model is the model of an atom in which an atom is regarded as a sphere of size 10^(-10)m radius and positively charged matter in which electrons were embedded. Thomson used the pudding as the positive charge and the plums as the negative charge. The plums are stuck in the pudding just as electrons are randomly found in an atom.
Describe the location of electron in Thomson's plum pudding?
In Thomson's plum pudding model, electrons are dispersed evenly throughout a positively charged sphere, much like raisins in a plum pudding. The electrons do not have specific locations within the sphere and are considered to be uniformly distributed.
What name was given to jj thompson's model of the atom?
J.J. Thompson's model of the atom, often refered to as the "plum pudding model" due to it's random distribution of electrons throughout the atom, suggested that negatively charged electrons were scattered about a positively charged jelly-like substance, with the charge from the positive material canceling out the negative charge from the electrons.
What were J. J. thomsons ideas called?
J.J. Thomson's ideas were called the plum-pudding model. This model described how electrons were evenly distributed throughout the atom.
What does the raisins represent in the plum pudding model of the atom?
In the plum pudding model of the atom, the "raisins" represent the negatively charged electrons dispersed throughout a positively charged "pudding" or matrix. This model, proposed by J.J. Thomson in 1904, suggests that the electrons are embedded within a diffuse cloud of positive charge, balancing the overall neutrality of the atom. The arrangement depicts the idea of electrons being spread out rather than contained in fixed orbits, as later models would suggest.
According to the plum pudding model electrons are distributed randomly thoughtout the positively charge pudding of the atom?
Atom
What did the pudding represent in the plum pudding model?
Thomson's plum pudding model is the model of an atom in which an atom is regarded as a sphere of size 10^(-10)m radius and positively charged matter in which electrons were embedded. Thomson used the pudding as the positive charge and the plums as the negative charge. The plums are stuck in the pudding just as electrons are randomly found in an atom.
What is plum pudding equations?
The plum pudding model, proposed by J.J. Thomson in 1904, describes the atomic structure as a sphere of positive charge with negatively charged electrons embedded within it, resembling a plum pudding dessert. The "plums" represent the electrons, while the "pudding" symbolizes the diffuse positive charge that balances the overall neutral charge of the atom. This model was later superseded by the Rutherford model after the discovery of the atomic nucleus, which revealed a more complex structure of the atom.
What charge does the dough in jj thomson's pudding model?
In J.J. Thomson's plum pudding model, the dough represents a positively charged substance, while the negatively charged electrons are embedded within it like raisins. The overall charge of the atom is neutral, as the positive charge of the "dough" balances the negative charge of the electrons. This model was an early attempt to describe the internal structure of atoms before the discovery of the nucleus.
How is the Bohr atomic model different from the plum-pudding model?
In Bohr's model , the atoms mass is found at its center instead of distributed throughout.this is for apex
How was Rutherford's gold foil experiment inconsistent with the plum pudding model of the atom?
Rutherford's gold foil experiment disproved the plum pudding model by showing that atoms have a small, dense nucleus at their center, rather than being uniformly filled with positive charge. The experiment revealed that most of the alpha particles passed straight through the foil, indicating that atoms are mostly empty space with a concentrated positive charge at the center. This contradicted the plum pudding model, which proposed that positive charge was evenly distributed throughout the atom.
Describe the location of electron in Thomson's plum pudding?
In Thomson's plum pudding model, electrons are dispersed evenly throughout a positively charged sphere, much like raisins in a plum pudding. The electrons do not have specific locations within the sphere and are considered to be uniformly distributed.
How is the Bohr model different from the plum-pudding model?
In Bohr's model , the atoms mass is found at its center instead of distributed throughout.this is for apex
Where is most of mass in the plum pudding model?
In the plum pudding model, most of the mass is thought to be concentrated in a diffuse, positively charged "pudding" that fills the atom. This pudding is interspersed with negatively charged electrons, resembling plums within the pudding. The model, proposed by J.J. Thomson in the early 20th century, suggests that the mass of the atom is primarily due to this positive charge, with the electrons contributing to the overall structure rather than mass. However, this model has since been replaced by the more accurate nuclear model of the atom.
What was JJ Thomsons 1904 model called?
JJ Thomson's 1904 model was called the "plum pudding model." This model described the atom as a sphere of positive charge with electrons embedded throughout, like plums in a pudding. It was later replaced by the more accurate Rutherford model.
How is bohr atomic model different from plum pudding model?
In Bohr's model , the atoms mass is found at its center instead of distributed throughout.this is for apex
How is the Bohr atomic model different from the plum pudding model?
In Bohr's model , the atoms mass is found at its center instead of distributed throughout.this is for apex
