Helium

HELIUM (He)
	Atomic Number: 2 Atomic Weight: 4.002602 Melting Point: 0.95 K (-272.2C or -458.0F) Boiling Point: 4.22 K (-268.93C or -452.07F) Density: 0.0001785 grams per cubic centimeter Phase at Room Temperature: Gas Element Classification: Non-metal Period Number: 1 Group Number: 18 Group Name: Noble Gas Helium -from helios or sun. Helium is the second most abundant element in the universe, after hydrogen. Lighter than air, the most difficult of gasses to liquify and is impossible to solidify at atmospheric pressure. Discovery: 1866 by Pierre Janssen of France Uses: Ballons; Bimbs; Lasers; Hydrogen bomb; Nuclear plant coolant

HELIUM (He)

Atomic Number: 2
Atomic Weight: 4.002602
Melting Point: 0.95 K (-272.2C or -458.0F)
Boiling Point: 4.22 K (-268.93C or -452.07F)
Density: 0.0001785 grams per cubic centimeter
Phase at Room Temperature: Gas
Element Classification: Non-metal
Period Number: 1 Group Number: 18 Group Name: Noble Gas

Helium
-from helios or sun. Helium is the second most abundant element in the universe, after hydrogen. Lighter than air, the most difficult of gasses to liquify and is impossible to solidify at atmospheric pressure.
Discovery: 1866 by Pierre Janssen of France
Uses: Ballons; Bimbs; Lasers; Hydrogen bomb; Nuclear plant coolant