Multiple Choice QuestionsThe de-Broglie wavelength of an electron in the first Bohr orbit is
equal to half the circumference of the first orbit
equal to one fourth the circumference of the first orbit
equal to the circumference of the first orbit
equal to twice the circumference of the first orbit
Whenever a hydrogen atom emits a photon in the Balmer series, it
may emit another photon in the Paschen series
need not emit any more photon
may emit another photon in the Balmer series
must emit another photon in the Lyman series
D.
must emit another photon in the Lyman series
Balmer series lies in emission spectra.
ni = 3
nf = 2
When electron jumps from n = 3 to n = 2 and emit a photon. Then to fill of this vacancy created by an jump another from any excited state jump to n = 1 state and there by emitted a photon whose energy is equal to the difference between the two levels. After 10 sec both return to their original position. Then also emit photons process continue and we observe line spectrum.
Hence one photon emitted in Balmer seres. Then H2 atom must emit another photon in Lyman series.
In the Bohr model of the hydrogen atom, let R, V and E represent the radius of the orbit, the speed of electron and the total energy of the electron respectively. Which of the following quantity is proportional to the quantum number n ?
VR
RE
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