25th November 2019

wikipedia
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Why Thomson model was called the plum pudding model?

It was proposed by J.J. Thomson's model showed an atom that had a positively charged medium, or space, with negatively charged electrons inside the medium. Soon after its proposal, the model was called a 'plum pudding' model because the positive medium was like a pudding, with electrons, or plums, inside.

Just so, why did JJ Thomson call it the plum pudding model?

In Thomson's model, the atom is composed of electrons surrounded by a soup of positive charge to balance the electrons' negative charges, like negatively charged “plums” surrounded by positively charged “pudding”.

What atom is being tested in the plum pudding model?

J.J. Thomson suggested the"plum pudding" model. In this model the electrons and protons are uniformly mixed throughout the atom: Rutherford tested Thomson's hypothesis by devising his "gold foil" experiment.

How was the plum pudding model tested?

A scientist called Rutherford designed an experiment to test the plum pudding model. The scientists realised that the positively charged alpha particles were being repelled and deflected by a tiny concentration of positive charge in the atom.
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