In the spectrum of singly ionized helium, the wavelength of a line observed is almost the same as the first line of Balmer series of hydrogen. It is due to transition of electron from n1 = 6 In the spectrum of singly ionized helium the wavelength of a line observed is almost the same as the first line of Balmer series of hydrogen. It is due to transition of electron from n1 = 6 October 16, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related