Date of Discovery: 1766 Discoverer: Henry Cavendish

Date of Discovery: 1766 Discoverer: Henry Cavendish Name Origin: From the Greek words hudôr (water) and gennan (generate) Uses: Balloons, metal refining Obtained From: mines, oil, gas wells

Symbol: H

Atomic number: 1

Electron configuration: 1s1

Melting point: -434.5°F (-259.1°C)

Discovered: 1766

Atomic mass: 1.00794 ± 0.00001 u

Discoverer: Henry Cavendish

Hydrogen

GROUP 1 PERIOD 1

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Date of Discovery: 1766 Discoverer: Henry Cavendish