Question

Why is that in Thompsons model of atom the mass of atom is due to electrons only.​

Answer 1

Answer:According to the postulates of Thomson's atomic model, an atom resembles a sphere of positive charge with electrons (negatively charged particles) present inside the sphere. The positive and negative charge is equal in magnitude and therefore an atom has no charge as a whole and is electrically neutral.

Step-by-step explanation:

Answer 2

An atom as a whole is electrically neutral because the negative and positive charges are equal in magnitude