The shortest wavelength of H-atom in …
CBSE, JEE, NEET, CUET
Question Bank, Mock Tests, Exam Papers
NCERT Solutions, Sample Papers, Notes, Videos
Related Questions
Posted by Parneet Kaur 9 months, 1 week ago
- 0 answers
Posted by Rihan Mehta 1 year, 2 months ago
- 0 answers
Posted by Naman Mehra 1 year, 2 months ago
- 0 answers
Posted by Shaila Bombe 1 year, 1 month ago
- 1 answers
Posted by "Serai✨ Wallance" 1 year, 2 months ago
- 0 answers
myCBSEguide
Trusted by 1 Crore+ Students
Test Generator
Create papers online. It's FREE.
CUET Mock Tests
75,000+ questions to practice only on myCBSEguide app
Yogita Ingle 5 years ago
Shortest wavelength, so highest energy is for , line that drops from infinity to Lyman series.
Energy = 13.6 *(1/n-1/infinity)
Energy = 13.6 , n=1
For He+ longest wavelength is for line drop from just immediately up 3 line or 2nd exited state.
So, energy= 13.6 (Z)2 *(1/(2)2-1/(3)2)
N=2 Balmer series
N=3 longest wavelength
Z=2 He+ ion
So, energy here is 13.6*20/36
So, it is 20/36 or 5/9 times of energy of H ion so for wavelength it is 9/5 more times than H ion wavelength so,
It is 9/5 x= wavelength of He+ ion .
1Thank You