A student performing the experiment described in this module collected the following data for helium and hydrogen. (1) Plot a calibration curve relating scale readings to the known values for the wavelengths of emission of helium. (2) Using the calibration curve prepared in (1), determine the wavelength of the hydrogen line at scale reading 10.7. (3) What color is the light emitted at the wavelength determined in (2)? (4) Calculate the energy (delta E) corresponding to the wave determined in (2). (5) Determine the level (n_2) from which the electron fell to n = 2 to produce the emission discussed in (2).
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Related questions
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1/The___________ series of the hydrogen atom occur in the infared region where electrons relax down to the n = __________quantum level.
2/Following are the spectral scale readings a student obtained:
Wavelength (in nm) | Spectral Scale reading | Color |
414.4 | 4.2 | Purple |
447.1 | 4.4 | blue |
471.3 | 4.6 | blue |
504.8 | 5.0 | green |
587.5 | 5.9 | yellow |
706.5 | 7.0 | red |
a.What is the slope for the calibration curve of this data?
( Answer in decimal form to one decimal place)
b. what is the wavelength associated for a spectral scale reading of 5.5 for the hydrogen atom?
c. what is the wavelength associated for a spectral scale reading of 4.8 for the hydrogen atom?
3/Sunlight exhibits what type of spectrum?
a. | continuous | |
b. | excitation | |
c. | absorption | |
d. | emission |
4/Which of the following is not a Balmer Series transition?
a. | n = 4 ---> n = 2 | |
b. | n = 6 ---> n = 2 | |
c. | n = 4 ---> n = 3 | |
d. | n = 5 ---> n = 2 | |
e. | n = 3 --> n = 2 |