In a hypothetical Bohr hydrogen, the mass of the electron is doubled. The energy E0 and the radius r0 of the first orbit will be (a0 is the Bohr radius) In a hypothetical Bohr hydrogen the mass of the electron is doubled. The energy E0 and the radius r0 of the first orbit will be (a0 is the Bohr radius) June 9, 2021 Category: Cengage NEET by C.P Singh , Chapter 15 - Properties of Matter , Facebook Messenger WhatsApp Share this:TwitterFacebook Related