Question

Thomson compared atom to watermelon and thus derived some conclusions. Which of the following were his conclusions?

• A. The seeds are the electrons and red edible part is the positive sphere.
• B. The seeds and edible part both are positive charge.
• C. The seeds are positive spheres and red edible parts are the electrons.
• D. The seeds and edible part both are electrons.

Answer 1

The correct option is A The seeds are the electrons and red edible part is the positive sphere.

Thomson’s model of an atom describes that the electrons are like seeds in a sphere of positive charge, which is the red edible part of watermelon. Thomson assumed that the negative and positive charges are equal in magnitude, thus the atoms is electrically neutral.