1.
How much energy is needed to excite an electron in H-atom from ground state to first excited state?
2.
The following diagram shows the energy levels for an electron in a certain atom. Which transition shown represents the emission of a photon with the most energy?
3.
If an α-particle collides head on with a nucleus, what is the value of impact parameter?
4.
When an electron in hydrogen atom is raised from the ground state to an excited state,
5.
If an electron in the hydrogen atom jumps from the third orbit to the second orbit, the wavelength of the emitted radiation in terms of Rydberg constant (R) is-
6.
The ratios between the first three Bohr radii are-
8.
The existence of positively charged nucleus in an atom was first established by-
9.
The transition from the state n = 3 to n = 1 in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition from-
10.
The ratio of minimum to maximum wavelength in Balmer series is-
