Describe Bohr’s model of the atom.
There are some drawbacks in Rutherford’s atomic model. So to overcome this and to explain structure of atom in detail Neil Bohr in 1912 proposed a model of atom. The postulates of Bohr’s model are given below: ● An electron revolves around the nucleus in the orbit of an atom with fixed energy. ● Energy of orbits increases from inner shell to the outer shells i.e. energy for orbit nearest the nucleus is lowest. ● If energy is supplied then electron moves from lower orbit to the higher orbit and if an electron jumps from higher orbit (energy level) to the lower orbit (energy level) then energy is emitted as electromagnetic waves. ● Each orbit or shell represents an energy level by an integer number as n=1,2,3,…. Such orbits are characterized as K,L,M,N……….. and titled from nucleus side to outwards.
