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hydrogen

Introduction

hydrogen (hĪˈdrəjən) [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.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

See more Encyclopedia articles on: Compounds and Elements

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