Answer:
J J Thomson
Step-by-step explanation:
J J Thomson in the year 1898 was the one who proposed the model of the atom that described electrons scattered throughout a ball of positive charge. This was the first atomic model , he proposed that atom is like a sphere with radius 10^{-10} m , where the positive charge is uniformly distributed. The electrons are embedded into it so as to give the most stable electrostatic arrangement.