Spectral Hydrogen Atom, Physics, Basic Statistics

Assignment Help:
Long before Bohr gave his theory of hydrogen atom, various scientists had observed experimentally, the spectral series of hydrogen atom. Bohr offered a theoretical explanation of these spectral series as follows:

1. Lyman series: Bohr postulated Lyman series is obtained when an electron jumps to the first orbit (n1 = 1) from any outer orbit (n2 = 2, 3, 4……).

Wave numbers of spectral lines Lyman series were calculated by

v? = R [1/12 – 1/k2], where k = 2, 3, 4…

These values of v? lie in the ultra violet region of the spectrum and agree well with the values of v? observed experimentally by Lyman.

2. Balmer series: according to Bohr, Balmer series is obtained when an electron jumps to the second orbit (n1 =2) from any outer orbit (n2 = 3, 4, 5…..).

Wave numbers of these spectral lines were calculated as

v?= R [1/22 – 1/k2], where k = 3, 4, 5…..

This set of spectral lines lie in the visible part of the spectrum.

3. Paschen series: according to Bohr, Paschen series is obtained when an electron jumps to the third orbit (n1 =3) from any outer orbit (n2 = 4, 5, 6…) Bohr calculated the wave numbers of spectral lines of Paschen series from the relation:

v?= R [1/32 – 1/k2], where k = 4, 5, 6……

These values of v? lie in the infra red region of the spectrum and agree well with values of v? observed experimentally by Paschen.

Bohr also predicted two new series in the infra red region of the spectrum, which were observed later by Brackett and Pfund.

4. Bracket series: according to Bohr, Brackett series is obtained when an electron jumps to the 4th orbit (n1 = 4) from any outer orbit (n2 = 5, 6, 7……)

5. Pfund series: according to Bohr, is obtained when an electron jumps to the 5th orbit (n1 =5) from any outer orbit (n2 = 6, 7, 8…….)

The origins of various spectral series of hydrogen atom are represented by table under which gives the longest and the shortest wavelengths of some of the spectral series of hydrogen atom.

Related Discussions:- Spectral Hydrogen Atom, Physics

Standard error of the differnce between means., IN two separate studies, th...

IN two separate studies, the actual difference between the means of a treated group and untreated group is 3 points. However, in one study sm1-m2 is very large and so the 3 points

Probability, Mike sells on the average 15 newspapers per week (Monday – Fri...

Mike sells on the average 15 newspapers per week (Monday – Friday). Find the probability that 2.1 In a given week he will sell all the newspapers

Obtain the critical value for a hypothesis test, Obtain the critical value ...

Obtain the critical value (or values) for a hypothesis test for the mean if you conduct: (a) an upper tail "z" test at the 1% level of significance. (b) a two-tailed "z" test

Analysis in spss, The whole point of organizing data using SPSS software is...

The whole point of organizing data using SPSS software is so that we can manipulate the data to answer our descriptive and inferential questions.  This next section will walk you t

#binomial probability, they gave me n=30 and p=.23 to get the answers for P...

they gave me n=30 and p=.23 to get the answers for P(20,x,23)= and P(x.23)=

Process capability questions, Objective: Determine process capability The s...

Objective: Determine process capability The sandwich shop†TM s goal I that every sandwich can be completed in less than 1.5 minutes using the following 20 data times: 1.5364 1.58

Find out revised probabilities for symptoms, This problem set consists of t...

This problem set consists of three problems and a short essay.  Each problem is worth 7 points, the essay is worth 4 points for a total of 25 points. 1.  What are the chances th

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd