Home
Class 12
PHYSICS
What is the formula to calculate barv ( ...

What is the formula to calculate `barv` ( wave number) of spectral lines in hydrogen?

Text Solution

Verified by Experts

`bar(v)=(me^(4))/(8epsilon_(0)^(2)ch^(3))[(1)/(n_(1)^(2))-(1)/(n_(2)^(2))]" or " bar(v)=R[(1)/(n_(1)^(2))-(1)/(n_(2)^(2))]`
where , R is Rydberg's constant, `R=1.097xx10^(7)m^(-1) ,n_(1) and n_(2)` are energy levels.
Promotional Banner

Topper's Solved these Questions

  • ATOMS

    SUBHASH PUBLICATION|Exercise THREE MARKS QUESTIONS WITH ANSWERS|8 Videos

  • ATOMS

    SUBHASH PUBLICATION|Exercise FIVE MARKS QUESTIONS WITH ANSWERS|10 Videos

  • ATOMS

    SUBHASH PUBLICATION|Exercise NUMERICALS WITH SOLUTIONS|13 Videos

  • ANNUAL EXAMINATION QUESTION PAPER (WITH ANSWER) MARCH 2018

    SUBHASH PUBLICATION|Exercise Part-C|11 Videos

  • COMMUNICATION SYSTEMS

    SUBHASH PUBLICATION|Exercise THREE MARKS QUESTIONS WITH ANSWERS|4 Videos

Similar Questions

Explore conceptually related problems

What is meant by the wave number of spectral line ?

Write the formula for the wave number of the spectral lines of Lyman series.

write the formula for the wave number of a spectral line of Balmer series.

Using the Rydberg formula, calculate the wavelengths of the first four spectral lines in the Lyman series of the hydrogen spectrum.

Write the formula to calculate the size of the molecule of gas.

Write the formula to calculate spin only magnetic moment.

What is the maximum number of spectral lines emitted by a hydrogen atom when it is in the third excited state ?

(a) Using Bohr's postulates, derive the expression for the total energy of the electron in the stationary states of the hydrogen atom. (b) Using Rydberg formula, calculate the wavelengths of the spectral lines of the first member of the Lyman series and of the Balmer series.

What is the maximum number of spectral line emitted by a hydrogen atom when it is in the fourth excited state?