Which model of an atom is similar to a Christmas pudding?a)Thomson’s ...
J. J. Thomson proposed the plum pudding model of the atom in 1904. In this atomic structure model, he considered atoms to have a cloud of negative charge and the positive charges. Thomson’s model of the atom was compared to plum pudding and watermelon. He compared the red edible part of the watermelon to positively charged sphere whereas the seeds of watermelon to negatively charged particles.
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Which model of an atom is similar to a Christmas pudding?a)Thomson’s ...
Thomson’s model
Thomson's model of an atom is similar to a Christmas pudding. This model was proposed by J.J. Thomson in 1904. In this model, the atom is compared to a Christmas pudding, where the positively charged particles (protons) are embedded in a sea of negatively charged particles (electrons), just like the raisins in a Christmas pudding.
Key points:
- Thomson's model suggests that the atom is a sphere of positive charge with electrons embedded in it.
- This model was proposed before the discovery of the nucleus.
- The electrons are scattered throughout the atom, similar to the raisins in a Christmas pudding.
- The overall charge of the atom is neutral, as the positive and negative charges balance each other out.
- However, this model was later replaced by the Rutherford model, which proposed the existence of a nucleus at the center of the atom.
In conclusion, Thomson's model of an atom, with its comparison to a Christmas pudding, is an early representation of the structure of an atom that has since been refined and replaced by more accurate models.