Explain Thomson ' Plum Pudding' model of an atom with diagram​.

The 'plum pudding' model of the atom was proposed by JJ Thomson, who had also discovered the electron. It was put forth before the discovery of the nucleus. According to this model, the atom is a sphere of positive charge, and negatively charged electrons are embedded in it to balance the total positive charge.
Postulates of Thomson’s atomic model
Postulate 1: An atom consists of a positively charged sphere with electrons embedded in it
Postulate 2: An atom as a whole is electrically neutral because the negative and positive charges are equal in magnitude

Thomson atomic model is compared to watermelon. Where he considered:
Watermelon seeds as negatively charged particles.
The red part of the watermelon as positively charged.