The shortest wavelength of hydrogen atom in Lyman series is . The longest wavelength in Balmer serie — JEE Mains Chemistry Past Papers Chemistry Question

💡 Solution & Explanation

(1) For Hydrogen atom (Z = 1) : H 1        = RH (1)2       2 1  Last line (2) For He+ atom (Z = 2) :         He = RH (2)2      2 1 1 = RH    9 1 = RH       5  first line From (1) & (2) H He    = 9  He = 9