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Uses: Helium is used to displace oxygen- and moisture-containing air in packaging material to extend the shelf-lives of the contents.
Aerial oxidation, hydrolysis, and other chemical reactions which degrade the products are retarded or prevented entirely.
Breathing in Helium balloons can be fatal.
However, should there be an oxygen-deficient environment caused by release of a large quantity of helium, especially in a confined space, a person may experience symptoms such as headache, ringing in the ears, dizziness, drowsiness, unconsciousness, nausea, vomiting and depression of all the senses.
Being confined to an oxygen-deficient environment for a prolonged period of time can even prove fatal.
Description: Next to hydrogen, Helium is the second most abundant element in the universe, and accounts for 24% of the elemental mass of our galaxy.
Its boiling and melting points are the lowest among the elements and it exists only as a gas except in extreme conditions.
