The shortest wavelength of H atom in the Lyman series is 1. The longest wavelength in the Balmer ser — JEE Mains Chemistry Past Papers Chemistry Question
Question
The shortest wavelength of H atom in the Lyman series is 1. The longest wavelength in the Balmer series of He+ is : (A) 9 (B) 36 (C) 5 (D) 27
Answer: A
💡 Solution & Explanation
For hydrogen atom : For Lyman series n1 = 1 & n2 = H = RH 1 1 So, = H R For He+ ion | JEE MAIN-2020 | DATE : 04-09-2020 (SHIFT-2) | PAPER-1 | OFFICIAL PAPER | CHEMISTRY PAGE # 9 Balmer series n1 = 2 & n2 = 3 He = RH × Z2 9 4 He = RH × 4 × 5 He = 5 RH = 9 He = 9
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