Which of the following transitions of electrons in the hydrogen atom will emit maximum energy?
The energy of second Bohr orbit of the hydrogen atom is -328 kJ mol-1; hence the energy of fourth Bohr orbit would be:
The wavelength of the radiation emitted, when in a hydrogen atom electron falls from infinity to stationary state 1, would be (Rydberg constant = 1.097×107 m–1)
The Bohr orbit radius for the hydrogen atom (n = 1) is approximately 0.530 Å. The radius for the first excited state (n = 2) orbit is (in Å)
Which of the following pairs is correctly matched?
The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be (Given : ionization energy of H=2.18 ×10–18 J atom–1 and h = 6.625 × 10–34 J s )
Which of the following statements do not form a part of Bohr’s model of hydrogen atom ?
The radius of hydrogen atom in the ground state is 0.53 Å. The radius of Li2+ ion (atomic number = 3) in a similar state is
According to Bohr's theory, the angular momentum of an electron in 5th orbit is
The spectrum of He is expected to be similar to that of
