What are the Postulates of Thomson of atom?

Thomson postulated that atom is:

i) A spherical ball like substance with an average radius of about 10-10

ii) The positive charge of the atoms is uniformly diffused (spread) over the entire volume of the sphere.

iii) The negatively charged electrons are embedded (fixed) randomly on the positively charged globe at regular intervals.

iv) The mass of the atom is distributed throughout the spherical volume uniformly.

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