Question

what is plum pudding model
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Answer 1

plum pudding model is nothing but Thomason atomic model

thomason state that atom is spherical,

+ Ve charge is uniformly distrubuted through out the atom,

-ve charge embedded in +Ve charge

Answer 2

Actually it was J.J Thomson's Model that an atom consist of mainly neutrons than protons which he called pudding as neutrons....it was electrially neutral.