Question

State the postulates of Thompson's model of atom. What were the two limitations of the model?

Answer 1

Answer:

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

Limitations of Thomson’s atomic model

It failed to explain the stability of an atom because his model of atom failed to explain how a positive charge holds the negatively charged electrons in an atom. Therefore, This theory also failed to account for the position of the nucleus in an atom

Thomson’s model failed to explain the scattering of alpha particles by thin metal foils

No experimental evidence in its support

Explanation:

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Answer 2

Answer:

1 . each atom had two components a. positive charged proton and b. negative charged electron.

2. proton was a sphere of positive mass along with electron embedded in it

thats why it was known as the plum pudding model