Question

state bhor's postulate?​

Answer 1

bhors postulate = 1) electrons in an atom exist in STATIONARY STATES.
. bhor stated that elctrons orbit the nucleus without emiting EM radiation

Answer 2

i) ELECTRONS REVOLVE AROUND THE NUCLEUS IN FIXED ORBITS. EACH ORBIT IS ASSOCIATED WITH A CERTAIN AMOUNT OF ENERGY HENCE NAMED - ENERGY LEVELS

ii) THE INTEGER 'N' - REPRESENTS THE VARIOUS - ENERGY LEVELS - 1,2,3.....STARTING FROM THE INNERMOST. THE LEVELS ARE ALSO DESIGNATED AS - K,L, M, N