Question

J. J. Thomson compared the structure of an atom with a watermelon and suggested that the seeds areand the red edible part is the.

• A. positive sphere
• B. neutrons
• C. electrons
• D. proton

Answer 1

Answer: (A), (C)

The correct options are
A positive sphere
C electrons

J. J. Thomson proposed that:

1) An atom consists of a positively charged sphere and negatively charged electrons are embedded in it like the seeds in watermelon.
2) The positive sphere and negative charged electrons are equal in magnitude and hence keep the atom electrically neutral.

However, Thomson's model failed to explain an atom’s stability and had other limitations.