Hydrogen
Hydrogen | |
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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 |