Ex

  Chemistry (NTSE/Olympiad)  

4. Structure Of Atoms

Thomson’s model of an atom

(A) Thomson’s model of an atom
Thomson was the first to propose a detailed model of the atom. He proposed that an atom consists of a uniform sphere of positive electricity in which the electrons are distributed more or less uniformly. The negative and the positive charge are equal in magnitude. Thus, the atom as a whole is electrically neutral. This model of atom is known as the “Plum pudding model”.

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