J.J. Thomson is credited with the discovery of the electron in about 1904. He envisioned negatively charged "corpuscles" floating in a positively charged cloud, just like plums in a plum pudding. This was the "plum pudding" model of the atom, and it lasted until Geiger and Marsden conducted their gold foil experiment in about 1909.
protons
jj thos .. In 1904 proposed that an atom was a sphere of +ve electricity in which were embedded no of e-(ectron) sufficient 2 neutralize the +ve chrg the stability of the atom was ewplained as a result of the balace b/w the repulsive forces b/w the e- & their attraction toward the center of the +ve sphere . &compared with a "water melon" in which seeds r embedded or with a cake or pudding in which raisins are embedded Ruther fords ; 1 )there must be sufficient enpty space within the atom 2) or small +ve charge in center
It is an inaccurate model, because there is no way to measure the exact mass, path, and charge of an atom
mass number and atomic number of an atom
Rutherford discovered that the atom has a nucleus, bohr's discovery is found on the Wikipedia Link further down this page.Few question and answers on Bohr's atomic modelThe basic assumption in Bohr's model of an atom is thatThe energy of electron is quantisedIn Bohr's model of the hydrogen atomthe radius of the nth orbit is propotional to n² the angular momentum of the electron in an orbit is an integral multiple of h/2λ the magnitude of potential energy of the electron in any orbit is greater than its K.E.
The discoveries of radium and polonium doesn't affect the atom model.
The Rutherford model involve a positive nucleus separated from electrons.
J.J. Thomson's work led to the proposal of the "plum pudding model" of the atom in 1904. In this model, the atom is envisioned as a spherical cloud of positive charge with negatively charged electrons embedded within it, similar to plums in a pudding. This model was an early attempt to describe the internal structure of the atom before the discovery of the nucleus and the later development of the Rutherford and Bohr models.
J.J. thomson's model doesn't have an electrons flowing around like how are planets orbit the sun. The current model has these things.
J.J. thomson's model doesn't have an electrons flowing around like how are planets orbit the sun. The current model has these things.
The charge of the negative charge of electrons surrounding the nucleus of the atom.
JJ Thomson's model of the atom is called the "plum pudding model." It suggested that atoms were made up of positive and negative charges distributed throughout a neutral, positively-charged background.
J.J. Thomson's ideas were called the plum-pudding model. This model described how electrons were evenly distributed throughout the atom.
Rutherford supposed that the atom had a central positive nucleus surrounded by negative electrons.
J.J. Thomson's work led to the development of the "plum pudding model" of the atom. In this model, atoms were envisioned as a positively charged "soup" in which negatively charged electrons were embedded like plums in a pudding. This model suggested that the atom was a uniform sphere of positive charge with electrons scattered throughout, providing an early understanding of atomic structure before the discovery of the nucleus.
im awesome!
according to jj thomsons model of an atom,an atom consists of a positively charged sphere with electrons in it.however,it was later found that positively charged particles reside at the center of the atom called nucleus,and the electrons revolve around the nucleus.