Hydrogen | Name | Hydrogen | | Symbol | H | | Atomic Number | 1 | | Atomic Mass | 1.00794 atomic mass units | | Number of Protons | 1 | | Number of Neutrons | 0 | | Number of Electrons | 1 | | Melting Point | -259.14° C | | Boiling Point | -252.87° C | | Density | .08988 grams per cubic centimeter | | Normal Phase | Gas | | Family | Nonmetal | | Period | 1 | | Cost | $1.00 per gram | | Origin of Name | From the Greek words hudôr, meaning water and gennan, meaning to generate | | Date and Place of Discovery | 1766 in England and in France | | Discovered by | Henry Cavendish and Antoine-Laurent de Lavoisier | | Common Compounds | - Water (H2O)
- Ammonia (NH3)
- Hydrochloric acid (HCl)
- Present in all organic compounds mostly bonded to carbon
| | Interesting facts | - It is the most abundant element in the universe. It makes up 90% of all atoms.
- It can be found in abundance in stars and gas giant planets like Jupiter.
- It plays an important role in the powering of the universe through proton-proton reactions.
- The United States produces about 3 billion cubic feet of hydrogen per year.
| | Common Uses | - Hydrogenation of fats and oils
- Methanol production
- Rocket fuel
- Welding
- Hydrochloric acid
- Reducing metallic ores
- Filling balloons
| Photo Courtesy of About.com Chemical Elements Chemistry: Web Elements Elmhurst College Jefferson Lab Los Alamos National Laboratory Wikipedia | | Hydrogen Atomic Structure | Elements by Name | Elements by Number | Home | |
