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

Hypothesis testing, a clinical psychologist claims that on average, at leas...

a clinical psychologist claims that on average, at least twenty five clients visit her per week. for a random sample of 8 weeks, the following numbers of clients were recorded; 25

Pie diagram, A survey was conducted among the residents of Pune City, its s...

A survey was conducted among the residents of Pune City, its suburbs and the Pune Cantonment area. The following three pie diagrams show their respective preferences for living in

Explain correlation coefficient, Q. Explain Correlation Coefficient? A...

Q. Explain Correlation Coefficient? Ans. The strength of a linear correlation is determined by how precisely the y variable shifts as the x variable increases. The two pi

Introduction to finance and accounting, How can I use a balance sheet to do...

How can I use a balance sheet to do assignment with some adjustment? do I have to make transaction of each adjustment, and after that I change the balance sheet afterward?

Cost accounting, what are the objective and importance of cost accounting a...

what are the objective and importance of cost accounting and managerial decision making.

Logistic regression model, Model 1:  Let's consider the logistic regression...

Model 1:  Let's consider the logistic regression model, which we will refer to as Model 1, given by log(pi / [1-pi]) = 0.25 + 0.32*X1 + 0.70*X2 + 0.50*X3

Quantitative methods, which method is better for new product to gather the ...

which method is better for new product to gather the information they need,primary data or secondary data?

Determine the probability - baye theorem, In a suburban community, 30% of t...

In a suburban community, 30% of the households use Brand A toothpaste, 27% use Brand B, 25% use Brand C, and 18% use Brand D. In the four groups of households, the proportions of r

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