⚛ Interactive Chemical Elements
Explore all 118 elements of the Periodic Table
All Categories
Alkali Metal
Alkaline Earth
Transition Metal
Post-transition Metal
Metalloid
Nonmetal
Halogen
Noble Gas
Lanthanide
Actinide
All States
Solid
Liquid
Gas
All Blocks
s-block
p-block
d-block
f-block
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118 elements shown
Click any element to see its information
57–71
Lanthanides
89–103
Actinides
Lanthanides →
Actinides →
H
Hydrogen
Atomic Number 1 • Nonmetal
Atomic Number
1
Atomic Mass
1.008 u
Group
1
Period
1
Block
s-block
Category
Nonmetal
State
Gas
Electron Configuration
1s¹
Melting Point
−259.16 °C
Boiling Point
−252.87 °C
Discovered
1766
💡 Important Fact:
Hydrogen is the lightest chemical element and the most abundant element in the universe.
Element Categories
Alkali Metal
Alkaline Earth
Transition Metal
Post-transition
Metalloid
Nonmetal
Halogen
Noble Gas
Lanthanide
Actinide