Periodic Table of the Elements: Hydrogen
Related article: Periodic Table of the Elements (table)Periodic Table of the Elements
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| Atomic Number: | 1 |
| Atomic Symbol: | H |
| Hydrogenhydrogen [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. ..... Click the link for more information. | |
| Atomic Weight: | [1.00784; 1.00811] |
| Electron Configuration: | 1 |