If the shortest wavelength in Lyman series of hydrogen atom is A, then the longestwavelength in Paschen series of He+ is :

Question

If the shortest wavelength in Lyman series of hydrogen atom is A, then the longestwavelength in Paschen series of He⁺ is :

${{5A} \over 9}$

${{9A} \over 5}$

${{36A} \over 5}$

${{36A} \over 7}$

Please login to view the detailed solution steps...