Advertisements
Advertisements
Question
Would the Bohr formula for the H-atom remain unchanged if proton had a charge (+4/3)e and electron a charge (−3/4)e, where e = 1.6 × 10–19C. Give reasons for your answer.
Solution
According to Bohr, for an electron around a stationary nucleus, the electrostatic force of attraction provides the necessary centripetal force.
i.e. `1/(4πε_0) (q_1q_2)/r^2 = (mv^2)/r` ......(i)
Hence the magnitude of electrostatic force F ∞ q1 x q2
If the proton had a charge (+4/3)e and the electron a charge (−3/4)e, then the Bohr formula for the H-atom remains the same, since the Bohr formula involves only the product of the charges which remain constant for given values of charges.
APPEARS IN
RELATED QUESTIONS
The positively charged part of the atom possesses most of the mass in ______.
In a Geiger-Marsden experiment, calculate the distance of closest approach to the nucleus of Z = 80, when a α-particle of 8Mev energy impinges on it before it comes momentarily to rest and reverses its direction.
How will the distance of closest approach be affected when the kinetic energy of the α-particle is doubles?
In a Geiger-Marsden experiment, calculate the distance of closest approach to the nucleus of Z = 75, when a α-particle of 5 MeV energy impinges on it before it comes momentarily to rest and reverses its direction.
How will the distance of closest approach be affected when the kinetic energy of the α-particle is doubles?
An automobile moves on a road with a speed of 54 km h−1. The radius of its wheels is 0.45 m and the moment of inertia of the wheel about its axis of rotation is 3 kg m2. If the vehicle is brought to rest in l 5s, the magnitude of average torque transmitted by its brakes to the wheel is:
The radius of electron's second stationary orbit in Bohr's atom is R. The radius of 3rd orbit will be:-
O2 molecule consists of two oxygen atoms. In the molecule, nuclear force between the nuclei of the two atoms ______.
The energy of hydrogen atom in an orbit is −1.51 eV. What are the kinetic and potential energies of the electron in this orbit?
The energy levels of a certain atom for first, second and third levels are E, 4E/3 and 2E, respectively. A photon of wavelength λ is emitted for a transition 3 `→` 1. What will be the wavelength of emission for transition 2 `→` 1?
According to Bohr model, magnetic field at centre (at the nucleus) of a hydrogen atom due to motion of electron in the ninth orbit is proportional to:
In the Rutherford experiment, α-particles are scattered from a nucleus as shown. Out of the four paths, which path is not possible?
