Thomson’s Model of The Atom
- Thomson was the first scientist to prepare a model for the structure of an atom.
- At that time only electrons and protons were discovered.
- Thomson’s model of the atom is similar to that of Christmas pudding. The electrons are embedded in a sphere of positive charge are like currants (dry fruits) in a spherical Christmas pudding.
- Thomson model can also be compared to a watermelon.
- According to this model:-
- An atom consists of a sphere of positive charge with negatively charged electrons embedded in it.
- The positive and negative charges in atom are equal in magnitude due to which an atom is electrically neutral. It has no overall positive or negative charge.
- Thomson’s model explained the electrical neutrality but failed to explain the various experiments carried out by other scientists like Rutherford.