Elements 2026 | Elements,
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, Hydrogen Symbol: H
Atomic Mass: 1.01
Atomic Number: 1
Helium Symbol: He
Atomic Mass: 4.00
Atomic Number: 2
Lithium Symbol: Li
Atomic Mass: 3
Atomic Number: 6.94
Beryllium Symbol: Be
Atomic Mass: 9.01
Atomic Number: 4
Boron Symbol: B
Atomic Mass: 10.81
Atomic Number: 5