According to Bohr theory, the electronic energy of the hydrogen atom in the nth Bohr orbit is given by En = −n^2 / -21.7 × 10^−19 J Calculate the longest wavelength of electron from the 3rd Bohr’s orbit of the He^+ ion. According to Bohr theory the electronic energy of the hydrogen atom in the nth Bohr orbit is given by En = −n^2 / -21.7 × 10^−19 J Calculate the longest wavelength of electron from the 3rd Bohr's orbit of the He^+ ion. November 9, 2020 Category: Chapter 2 - Atomic Structure , Chemistry , JEE Adv and Mains Chemistry 41 Years Solved Video Solutions 1979 - 2019 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related According to Bohr theory, the electronic energy of the hydrogen atom in the nth Bohr orbit is given by En = −n^2 / -21.7 × 10^−19 J Calculate the longest wavelength of electron from the 3rd Bohr's orbit of the He^+ ion.The energy of second Bohr orbit of the hydrogen atom is −328 kJ mol^−1, hence the energy of fourth Bohr orbit would be.In hydrogen atom, the de Broglie wavelength of an electron in the second Bohr orbit is (given that Bohr radius, a0 = 52.9pm)