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NEET Chemistry QUESTION #7382
Question 1
Which atomic model described the atom as a sphere of uniform positive charge with electrons embedded in it to give a stable arrangement?
  • Thomson's atomic model✔️
  • Rutherford's atomic model
  • Bohr's atomic model
  • Chadwick's atomic model
Correct Answer Explanation
Thomson's 'plum pudding' model (1904) proposed that the atom is a sphere of diffuse positive charge with electrons embedded throughout like plums in a pudding. This model was disproved by Rutherford's gold foil experiment (1911), which showed that positive charge is concentrated in a tiny dense nucleus, with electrons orbiting at large distances.