Question

describe Thomson's model of the atom which subatomic particle was not present in Thomson model of the atom

Answer 1

Thomson proposed the model of an atom and identified it similar to that of Christmas pudding , the electrons in a sphere is present like dry fruits in a spherical (positive charge) Christmas pudding ........it can also be compared with watermelon in which positive charge in the atom spread all over like the red edible part where as electrons are like the seeds in the watermelon.....

Neutron was not present in Thomson model of atom.....

Answer 2

Question :-

Describe Thomson's model of the atom. Which subatomic particle was not present in Thomson model of the atom ?

Answer :-

Thomson's Model of Atom :

⬛ Thomson's model of the atom was the first model.

⬛ He said that atom is a sphere of positive charge.

⬛ According to him, electrons (negative charges) were embedded in the positive sphere.

⬛ He compared an atom to a Christmas pudding.

⬛ The pudding was said to be the positive sphere of the atom and the dry fruits in it was compared to the negative charges or the electrons.

⬛ We can also compare this mod of an atom with a watermelon.

⬛ The red part part of the watermelon can be said the positive sphere.

⬛ Whereas, the seeds of the watermelon embedded allover the red part can be said to be the electrons.

He concluded with result as :

⚫An atom is a positive sphere embedded with electrons.

⚫The magnitude of positive charges and negative charges are equal, making an atom electrically neutral.

➡ The subatomic particle was not present in Thomson Model : Neutrons.