Question

What was 3rd postulate of Bohr's atomic model?​

Answer 1

✔REFER TO ABOVE ATTACHEMNT !

Answer 2

3rd Postulate of Bohr's Atomic Model-

=> According to 3rd postulate of Bohr's atomic model electrons can revolve only in those orbits in which angular momentum (mvr) of electron is integral multiple of h \ 2π that is

$mvr \: = \: \frac{nh}{2π}$

where

n = +ve integer number like (n= 1,2,3,4..)

h = Planck'Constant

π = constant

=> Also this postulate explains that angular momentum can have value such as

$\frac{h}{2π} \: + \: \frac{2h}{2π} \: + \: \frac{3h}{2π} \: + \frac{4h}{2π} .........$

but it cannot have fractional values such as

$\frac{1.5h}{2π} \: or \: \: \frac{1.2h}{2π} \: or \: .5\frac{2h}{2π} ...........$