The transition from the state $n = 4$ to $n = 3$ in a hydrogen like atom results in ultraviolet radiation. Infrared radiation will be obtained in the transition
$2 \to 1$
$3 \to 2$
$4 \to 2$
$5 \to 4$
What is plum pudding model of the atom ?
Give a powerful way to determine an upper limit to the size of the electron.
The following diagram indicates the energy levels of a certain atom when the system moves from $2E$ level to $E$, emitting a photon of wavelength $\lambda $. The wavelength of photon produced during its transition from $\frac{4E}{3}$ level to $E$ is
Ratio of longest wavelengths corresponding to Lyman and Balmer series in hydrogen spectrum is
Explain Rutherford's explanation for scattered $\alpha $ -particles.