Question

Distinguished between of Atomic model of Thomas And Rutherford

Answer 1

Answer:

Thomason's Model Of The Atom

J.J Thomason proposed his model of the atom in 1903, then only electrons and protons were known to be present in the atom. According to Thomas's model of the atom:

1. An atom consists of the sphere (or ball) of positive charge with charge electrons embedded in it .
2. The positive and negative charges in the atom are equal in magnitude, due to which an atom is electrically neutral .It has no overall positivenegative charge.
3. These equal and opposite charge balance each other due to which an atom becomes electrically neutral on the whole .

Although Thomason's Model Of atom explained the electrically neutral nature of atom but it could not explain the results of various experiments carried out by other scientists such as Rutherford's experiments.

Rutherford's Model Of The Atom

On the basis of the alpha particle scattering experiments, Rutherford's gave a nuclear model of the atom and the model of atom can be described as follows:

1. An atom consists of a positively charged , dense and very small nucleus containing all protons and neutrons . Almost the entire mass of an atom is connectracted in the nucleus .
2. The nucleus is surrounded by negatively charged electrons. The electrons are revolving round the nucleus in the circular paths at very high speed. The circular paths of the electrons are called orbits.
3. The electrostatic attractions between positively and negatively charged electrons holds the atom together.