Noble Gases

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• Hellium
• Neon
• Argon
• Krypton
• Xenon

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• They are extremly rare in nature
• These gases were discovered in the last five years of the 1800s
• The element Helium comes from the Greek word hellos , used to refer to the sun

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• Argon is used in common light bulbs
• Helium is used in most balloons
• Krypton and Xenon are used in photograghic flash units

Helium

Helium is the first element in the noble gas group. Its also colorless , tasteless , odorless and non-toxic

Helium's atomic number and mass is two and four. Helium is a non metal. Helium is not very dense , its even less dense than air.

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• Helium is commonly used in balloons whether its party balloons or science balloons
• liquid helium is used to create superconductive magnets
• helium is also used to clear rocket engines

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• Helium is the second most common element in the Universe (after hydrogen)
• Has a low boiling point
• The USA is the world's largest supplier of helium

The element Helium comes from the Greek word hellos , used to refer to the sun. It was named by English chemist Edward Frankland. French and English astronomers Pierre Janssen and Norman Lockyer are credited with discovering helium after spectral analysis of sunlight following a solar eclipse in 1868.