Sulphur: Stone Bridge in Sulphur, Oklahoma. Sulphur: Spring pool at Chickasaw National Recreation Area at Sulphur, Oklahoma. Sulphur: A creek that runs through the Park at Sulphur, Ok - 2007. Sulphur: Flower Park, Sulphur, OK. Sulphur: Tunnel under road that lead to a spring in Sulphur, Ok - 2007.
At room temperature hydrogen is a gas. It is a colorless, tasteless and odorless gas. It is the lightest gas. It is insoluble in water. It is highly inflammable and burns with blue flame forming water. Liquefication temperature of hydrogen is -252oC. Bond energy of H-H is 431 Kj/mole. Electro negativity of hydrogen is 2.1.
For Hydrogen, the boiling point is -253 degrees Celsius; for Mercury it is 357 degrees Celsius, and for Iron it is 2,750 degrees Celsius. From these numbers you can see that at room temperature (and indeed for nearly any temperature found on Earth) Hydrogen is a gas, Mercury is a liquid, and Iron is a solid.