Hydrogen (Element)
Introduction
hydrogenhī´drəjən [key] [Gr.,=water forming], gaseous chemical element; symbol H; at. no. 1; interval in which at. wt. ranges 1.00784–1.00811; m.p. −259.14°C; b.p. −252.87°C; density 0.08988 grams per liter at STP; valence usually +1.
Sections in this article:
- Introduction
- Discovery of Hydrogen and Its Isotopes
- Sources and Commercial Preparation
- Uses
- The Isotopes and Forms
- Properties
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.
See more Encyclopedia articles on: Compounds and Elements