Home
Class 12
PHYSICS
How many different wavelengths, may be o...

How many different wavelengths, may be observed in the spectrum from a hydrogen sample if the atom are excited to be state withprincipal quantum number `n` ?

Text Solution

Verified by Experts

From the nth , the atom may go to `(n = 1)th` state , … second state or first state , So there are `(n - 1)` possible transition starting from the nth state. The atom reaching `(n - 1)th` state may make `(n = 2)` differente transition and so on. In general, the total number of possible transition is
`(n - 1) + (n - 2) + (n - 3) + .....+ 2 + 1 = (n(n - 1))/(2)`
Promotional Banner

Topper's Solved these Questions

  • ATOMIC PHYSICS

    CENGAGE PHYSICS|Exercise Solved Examples|23 Videos

  • ATOMIC PHYSICS

    CENGAGE PHYSICS|Exercise Exercise 4.1|15 Videos

  • ALTERNATING CURRENT

    CENGAGE PHYSICS|Exercise QUESTION BANK|65 Videos

  • ATOMS

    CENGAGE PHYSICS|Exercise QUESTION BANK|40 Videos

Similar Questions

Explore conceptually related problems

How many different wavelength may be observed in the spectrum from a hydrogen sample if the atoms excited to states with principal quantum number n?

X different wavelengths may be observed in the spectrum from a hydrogen sample if the atoms are exited to states with principal quantum number n=6 ? The value of X is ______________.

How many different wavelengths may be observed in the spectrum form a hydrogen sample, if the atoms are excited to third excited state?

The number of different wavelengths may be observed in the spectrum from a hydrogen sample if the atoms are excited to third excited state is

The value of wavelength radiation emitted by an H -atom, if atom is excited to state with principal quantum number four is :

Photons of equal energy were incident on two different gas samples. One sample containing H-atoms in the ground state and the other sample containing H-atoms in some excited state with a principle quantum number 'n'. The photonic beams totally ionise the H-atoms. If the difference in the kinetic energy of the ejected electrons in the two different cases is 12.75 eV . Then find the principal quantum number 'n' of the excited state.

Hydrogen atom in its ground state is excited by means of a monochromatic radiation of wavelength 970.6 Å . Different wavelengths are possible in the spectrum. After absorbing the energy of radiation, hydrogen atom goes to the excited state. After 10^(-8) s, the hydrogen atom will come to the ground state by emitting the absorbed energy. Number of different wavelengths present in the spectrum

When a hydrogen atom is excited from ground state to first excited state then

Hydrogen atom in its ground state is excited by means of a monochromatic radiation of wavelength 970.6 Å . Different wavelengths are possible in the spectrum. After absorbing the energy of radiation, hydrogen atom goes to the excited state. After 10^(-8) s, the hydrogen atom will come to the ground state by emitting the absorbed energy. Energy absorbed by hydrogen atom is