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 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 October 16, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related