The wave-number of a photon line Brackett series of hydrogen atom is 9/400 R. The electron has transited from the orbit having quantum number The wave-number of a photon line Brackett series of hydrogen atom is 9/400 R. The electron has transited from the orbit having quantum number June 7, 2021 Category: Chapter 12 - Atoms , MTG NEET Physics , Part 2 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related