experiment chimestry ( Spectroscopy and atomic spectra)

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Table 1 –Observable Helium emission lines in the visible spectrum

Figure 1 – Calibration Plot for Helium

Equation 1: λ(nm) = 5.7331*( scale reading) +414.68

Table 5.4 H-Atom Spectrum Results:

N1	N2	Theoretical λ(nm)	Scale reading	Exp λ(nm)	% error
1	2	121	Experimentally not observable (UV)
1	3	102
1	4	97
2	3	656	42 (RED)	655.4	0.0%
2	4	486	11 (BLUE)	477.7	0.02%
2	5	434	7 (PURPLE)	454.8	0.05%
2	6	410
3	4	1875	Experimentally not observable (IR)
3	5	1282
3	6	1084
Theory	Measurement	Calibration/Calculation

*To calculate the Error, use exp λ (nm) as,

Exp λ (nm) % error = * 100

Table 5.5 Wavelength Observations for Mercury (Hg)

Table 4 – Krypton (Nobel Gas):

Table 5 – General Observation on the Color

Nobel gases	Color	Observaton
Xenon	Purple, Blue	Dull - 6
Krypton	Yellow, Green, Orange, Purple	Bright/thin and Dull 2-3 line
Neon	Red, Orange, Yellow, Blue, Light Blue	Multi lines Bright colors and Dull
Argon	Purple, Green, Yellow, Red	Dull

Websites I have to site

https://ehs.ucr.edu/laser/wavelength.html site:

http://hyperphysics.phy-astr.gsu.edu/hbase/quantum/atspect2.html

44.0 30.0 16.0 10.0 5.0 667.8 587.6 501.6 471.3 447.1

scale reading

wave length