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DATA PAGE
Emission Spectrum of Hydrogen
Color of Line Noted
Wavelength (nanometers)
Red
650
Green
480
Blue
430
Violet
410
Emission Spectrum of Mercury
Color of Line Noted
Wavelength (nanometers)
Red
690
Orange
600
Green
540
Blue
430
Violet
400
Emission Spectrum of Neon
Color of Line Noted
Wavelength (nanometers)
Red
652, 658, 685, 695, 705
Orange
600, 620, 635, 636, 646
Green
528, 534, 560
Blue
465
Emission Spectrum of Incandescent Light Bulb
Emission Spectrum of Fluorescent Light Bulb
Color of Line Noted
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View Full Document Red
Orange
Yellow
Green
Blue
Violet
Color of Line Noted
Red
Orange
Yellow
Green
Blue
Violet
Emission Spectrum of Sunlight
Color of Line Noted
Wavelength (nanometers)
Red
580620
Orange
570590
Green
490570
Blue
410460
Treatment of Data
Calculation of Hydrogen Energies:
Energy = (hc)/ λ
where h is Plank’s constant (6.626 x 10
34
Js), c is the velocity of light (2.998 x
10
8
m/s), and λ is the wavelength in meters.
Therefore, the calculations of the hydrogen energies from the data are as follows:
Energy
violet
= [(6.626 x 10
34
Js) (2.998 x 10
8
m/s)] / [(410 nm) (1 m/ 10
9
nm)] =
4.845 x 10
19
J
Energy
blue
= [(6.626 x 10
34
Js) (2.998 x 10
8
m/s)] / [(430 nm) (1 m/ 10
9
nm)] =
4.620 x 10
19
J
Energy
green
= [(6.626 x 10
34
Js) (2.998 x 10
8
m/s)] / [(480 nm) (1 m/ 10
9
nm)] =
4.138 x 10
19
J
Energy
red
= [(6.626 x 10
34
Js) (2.998 x 10
8
m/s)] / [(650 nm) (1 m/ 10
9
nm)] =
3.056 x 10
19
J
The calculations of the hydrogen energies from the visible spectrum are as follows:
Energy
violet
= [(6.626 x 10
34
Js) (2.998 x 10
8
m/s)] / [(410.2 nm) (1 m/ 10
9
nm)] =
4.843 x 10
19
J
Energy
blue
= [(6.626 x 10
34
Js) (2.998 x 10
8
m/s)] / [(434.1 nm) (1 m/ 10
9
nm)] =
4.576 x 10
19
J
Energy
green
= [(6.626 x 10
34
Js) (2.998 x 10
8
m/s)] / [(486.1 nm) (1 m/ 10
9
nm)] =
4.087 x 10
19
J
Energy
red
= [(6.626 x 10
34
Js) (2.998 x 10
8
m/s)] / [(656.3 nm) (1 m/ 10
9
nm)] =
3.027 x 10
19
J
From the calculations, it is shown that the collected data is very similar to the actual data of the
visible spectrum. Therefore, the energies obtained from the collected data are fairly accurate.
Calculation of Initial Orbit Number:
To calculate the initial orbit number, n
initial,
for the Bohr model of the hydrogen spectrum, the
follow equation must be used:
ΔE = 2.179 x 10
18
[(1/n
2
final
) – (1/n
2
initial
)] joules
All of the lines of the hydrogen spectrum that lie in the visible region have a final orbit number
of two. Therefore, n
final
can be interpreted as n
final
= 2.
ΔE is the hydrogen energies in relation to
the various colors.
n
inital of violet
:
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View Full Document Therefore, the initial orbit number of violet
is six because according to the Bohr model the value
of the principal quantum number can only be integers between one and infinity.
n
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This note was uploaded on 02/05/2012 for the course BIO 102 taught by Professor Avery during the Spring '11 term at FGCU.
 Spring '11
 avery

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