On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole.
- As per Thomson, the model of atom is similar to a plum pudding .
- The pudding is spherical in shape and has dry fruits embedded (spread) throughout the pudding.
- Similarly an atom has negatively charged electrons embedded in a positively charged sphere.
- He explained that the total positive charge is equal to the total negative charge contributed by the electrons embedded.
- Hence, the atom is neutral as a whole.