Periodic Table · element

Hydrogen

H · Z 1

atomic number

1

atomic mass

1.008

notation

H

group

1: Lithium

period

1

state0c

Gas

state20c

Gas

occurrence

Primordial

density

8.99e-05

melting pt

-259.14

boiling pt

-252.87

discovered

1766

abundance

1400

bio class

Bulk

bio role

Half the atoms in a body. Water, every organic molecule, and the proton gradients across membranes that ATP synthase turns into ATP.

ore minerals

water; natural gas

mined as

Not mined

extraction

Almost all from steam reforming of methane; electrolysis of water is the growing low-carbon route.

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From the All Periodical Elements database in Notion, last edited 2026-08-25. This page is the row, rendered by the build; nothing on it is written by hand.