Differentiate between the following.
Discoveries of J.J. Thomson, Ernest Rutherford, and Neils Bohr.
Discoveries of J.J.Thomson, | Ernest Rutherford | Neils Bohr |
A. This model states the electron are embedded in a positively charged solid material which is spherical in shape. | A. This model explains that there is a nucleus in the center of the atom and electrons are located around the nucleus. | A. This was proposed by Bohr in 1922. |
B. Thomson model of an atom does not give any information about the nucleus | B. This model gives information about the nucleus and its location inside the atom. | B. Electrons only emit a wave of definite frequencies. |
C. According to this electrons are embedded in a solid material. | C. This model says electrons are located around the nucleus. | C. Most of the atomic mass lies in the centre of nucleus which contains protons, and electrons are arranged in definite energy level. |
D. This model does not give information about the orbitals. | D.T his model explains about the orbitals and electrons located in these orbitals | D. It gives satisfactory explanation about the concept of orbitals. |
E. According to this model mass of an atom is the mass of positively charged solid where electrons are embedded. | E. According to this model the mass of an atom is concentrated in the nucleus of an atom. | E. According to this nucleus contains the majority of the mass of the atom in its protons and neutrons. |