Posted by Amber on Friday, April 6, 2012 at 1:24am.
for the transition of an electron in a hydrogen atom between the principal quantum number levels 4 and 3, calculate
a) the energy released
b) the wavelength of the line in the spectra.

Please Chemistry Help  DrBob222, Friday, April 6, 2012 at 1:35am
E = 2.180E19 x (1/9  1/16)
Then E = hc/wavelength

Please Chemistry Help  Amber, Friday, April 6, 2012 at 2:03am
can you explain it a little more cuz i really didn't understand anything!!!!
thank you!

Please Chemistry Help  DrBob222, Friday, April 6, 2012 at 2:10am
Energy in joules = 2.180E19(1/n1^2  1/n2^2)
n1 = 3 and 1/n^2 is 1/9
n2 = 4 and 1/n^2 is 1/16
The rest of it is algebra.
After you have the energy, then set that in the following equation.
E = hc/wavelength.
h is Planck's constant in J.s
c is speed of light in m/s
wavelength is in meters. Plug and chug.
Answer This Question
Related Questions
 Chemistry  What is the unit m^1? The question I'm working on says "an electron...
 chemistry  help needed in drawing the diagram to show how hydrogen has numerous...
 Chemistry  Did I answer these correctly? 1. What is the total number of ...
 Physics  Please help me answer the question below and also show equations and ...
 physics  Please help me answer the question below and also show equations and ...
 Chemistry  When an electron makes a transition from the n=3 to the n=2 hydrogen...
 Chemistry  From the information below, identify element X. a. The wavelength of...
 Chem  From the information below, identify element X. a. The wavelength of the ...
 chemistry  Calculate the shortest wavelength of visible light (in nanometers) ...
 chem  What is the wavelength (in nm) of the line in the spectrum of the ...
More Related Questions