Helium (He)

Helium (He)


Atomic Number: 2

Atomic Weight: 4.002602

Melting Point: 0.95 K (-272.2°C or -458.0°F)

Boiling Point: 4.22 K (-268.93°C or -452.07°F)

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

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