Question

Bohr's atomic model assumes circular orbits of the electrons.

• A. True
• B. False

Answer 1

The correct option is A True

Bohr Model of Atom (1913):- The important postulates on which Bohr’s model is based are the following -

1. The atom has a nucleus where all the protons are present. The size of the nucleus is very small. It is present at the center of the atom.
2. Each stationary orbit is associated with a definite amount of energy. The greater is the distance of the orbit from the nucleus, the more shall be the energy associated with it. These orbits are also called energy levels and are numbered as 1, 2, 3, 4 ------or K, L, M, N ---- from the nucleus to outwards.
3. By the time, the electron remains in any one of the allowed stationary orbits, it does not lose energy. Such a state is called a ground or normal state.
4. The emission or absorption of energy in the form of radiation can only occur when an electron jumps
   from one stationary orbit to another.
5. Negatively charged electrons revolve around the nucleus in a circular path. The force of attraction between the nucleus and the electron is equal to the centrifugal force of the moving electron.
   Force of attraction towards nucleus = Centrifugal force

Hence, the given statement is true.