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What is the wavelength of light emitted when the electron in a hydroge...

What is the wavelength of light emitted | Class 11 Chemistry Chapter Structure of Atom, Structure of Atom NCERT Solutions

Question:

What is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition from an energy level with n = 4 to an energy level with n = 2?

Answer:

According to Balmer formula

Wave no = R_H [1/n₁² – 1/n₂²]

Here n1 = 2 , n2 = 4, RH = 109678

Putting these values in the equation we get

Wave number =109678(1/2²- ¼²) = 109678 x 3/16

Also λ = 1/ wave number

Therefore λ = 16 / 109678 x 3 = 486 nm

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Comments

Teju k b
2019-07-17 20:40:18

How answer obtained ?

Jeet
2019-06-11 17:05:47

All thing are ok fools

Naveen
2018-12-16 22:21:20

Good but we can obtain the value by energy formula....Or not.Rh value explain please....

Vivek singh
2018-10-22 15:30:08

What is the colour

Vinay Agrawal
2018-09-23 16:23:59

Calculations are incorrect

Chandransh
2018-07-18 11:58:48

Why the value of rh is taken as 109678

Shruti kumari
2018-06-19 21:26:39

Why rh is 109678

hashir
2018-04-29 21:26:36

unit is cm or nm

neeta
2017-10-02 20:13:18

Why RH value is taken as 109678?

Tushar
2017-08-30 20:22:08

How there comes 10 on last line and where is 3 ???

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Welcome to the NCERT Solutions for Class 11 Chemistry - Chapter . This page offers a step-by-step solution to the specific question from Excercise 1 , Question 13: What is the wavelength of light emitted when the electron in a hydrogen atom undergoes transition fr....

What is the wavelength of light emitted | Class 11 Chemistry Chapter Structure of Atom, Structure of Atom NCERT Solutions

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