Question

23. Wavelength of photon in H-atom is 434 nm in
transition from n = 5 ton-2. Wavelength of photon
for same transition in He atoms is :
(1) 108.5 nm
(2) 672 nm
(3) 174 nm
(4) 218 nm​

Answer 1

Answer:

108.5 is the a answer of a question