Symbol | H | Atomic radius: pm | 37 | Fusion: kJ/Mole | 0.12 |
Name | Hydrogen | Ionic radius: pm | - | Boiling point: °C | -253 |
Atomic number | 1 | Electron affinity | 0.75 | Melting point: °C | -259 |
Atomic weight | 1.008 | 1st ion potential | 13.60 | Specific Heat Cap: J/(g K) | 14.30 |
Classification | Non-metal | Natural form | Gas | Thermal Cond: W/(cm K) | 0.002 |
Configuration | 1s1 | Crystal structure | Hex | Electrical Cond | - |
Oxidation states | 1 | Density | 0.089 | Abundance: mg/kg-crust | 1400 |
Electronegativity | 2.2 | Vaporization: kJ/Mole | 0.90 | ||
Hydrogen was discovered in 1766 by Henry Cavendish |
Uses - rocket fuel, metal refining, was used in balloons in the past, but was discontinued because hydrogen is highly flammable |