1.
The ratio of minimum to maximum wavelength in Balmer series is-
2.
When an electron in hydrogen atom is raised from the ground state to an excited state,
4.
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?
5.
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-
6.
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-
7.
How much energy is needed to excite an electron in H-atom from ground state to first excited state?
8.
The ratios between the first three Bohr radii are-
9.
The existence of positively charged nucleus in an atom was first established by-
10.
If an α-particle collides head on with a nucleus, what is the value of impact parameter?
