Question

Hydrogen atom emits blue light when it jumps from n = 4 energy level to n =2 which colour of light with the atom when it changes from n is equal to 5 level 2 n is equal to level

Answer 1

wavelength)1=5.33/Rh

wavelength)2= 4.7/Rh

wavelength of 1 is greater than 2

we know VIBGYOR wavelength increases in that order

so,. wavelength 1 is blue light then

wavelength 2 is Indigo or Red

Answer 2

Answer:

The violet color of light will be given by an atom when it electron jumps from n= 5 to n= 2.

Explanation:

Using Rydberg's Equation:

$\bar{\nu}=\frac{1}{\lambda}=R_H\left(\frac{1}{n_i^2}-\frac{1}{n_f^2} \right )$

Where,

$\bar{\nu}$ = Wave number

$\lambda$ = Wavelength of radiation

$R_H=1.097\times 10^7 m^{-1}$ = Rydberg's Constant

$n_f$ = final energy level = 2

$n_i$= initial energy level = 5

$\frac{1}{\lambda}=1.097\times 10^7 m^{-1}\left(\frac{1}{5^2}-\frac{1}{2^2} \right )$

$\frac{1}{\lambda}=1.097\times 10^7 m^{-1}\times \frac{21}{100}$

$\lambda= -4.3408\times 10^{-8} m$

As wavelength cannot be negative.

$\lambda= 4.3408\times 10^{-7} m=434.08 nm$

Wavelength of violet color = 380 nm to 450 nm

The violet color of light will be given by an atom when it electron jumps from n= 5 to n= 2.