The major flaw in J. J. Thomson's plum pudding model is that it did not
account for the nucleus of the atom.
J.J. Thomson was a scientist and one of the founding fathers of the atomic
model. He proposed that an atom has negatively-charged electrons
embedded in a positively-charged particles thereby balancing the charges.
He called the negatively charged electrons 'plum' and the positively charged
ones 'soup' . This model however didn't take into account atoms having
nucleus which flawed it.
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