Question

What are the colors, wavelengths, and relative intensity (strong, medium or weak) of each of these lines?

Xenon

Helium

400 450 500 WAVELENGTH IN MILLIMACHINES 550 600 700 750 450 500 WAVELENGTH IN MILLIMICRONS 550 600 650 700

Argon

Krypton

Mercury

Neon

Answer 1

	Colour	Wavelength(nm)	Relative intensity
Xenon	Deep Blue Sky Blue	475 500	Medium Weak
Helium	Deep Blue Sky Blue Yellow Brick-Red Red	447 501 588 668 706	Medium Medium Strong Strong Strong
Argon	Violet Deep Blue Sky Blue Green Yellow Brick-Red Red Red Red Infra-Red Infra-Red	424 475 525 550 601 660 696 736 748 762 770	Medium Weak Weak Weak Medium Medium Medium Strong Strong Strong Medium
Krypton	Violet Green Yellowish-Orange	425 560 590	Weak Weak Weak
Mercury	Violet Green Yellow	436 546 549	Strong Strong Weak
Neon	Green Yellow Yellow Orange Orange Orange Red-Orange Red-Orange Red Red Red Red Red Red	540 585 588 603 607 616 621 626 638 640 650 660 693 703	Strong Strong Weak Medium Weak Medium Weak Weak Weak Medium Medium Weak Medium Medium

The error in the wavelengths are merely 0.1%. The peaks of spectral lines of Argon and Kryptons are mainly in the interval (700-910) nm.