Did you know that the element mercury is the only metal that is liquid at room temperature? It is a shiny, silver-colored metal that is sometimes used in thermometers and barometers due to its unique properties. Another interesting fact is that the element tungsten has the highest melting point of any metal, at a staggering 3,422 degrees Celsius. This makes it ideal for use in high-temperature applications such as light bulb filaments and electrical contacts. On the other hand, helium is the only element that was first discovered in space before being found on Earth. It was initially detected in the Sun's spectrum in 1868 before being isolated on our planet in 1895. Despite its name, the element lead is actually denser than gold. Lead is commonly used in construction, batteries, and radiation shielding due to its high density and malleability. Lastly, the element uranium was named after the planet Uranus, which was discovered in 1781. Uranium is commonly used as fuel in nuclear reactors due to its ability to undergo fission reactions. These are just a few fascinating facts about elements on the periodic table, showcasing the diverse and unique properties of different chemical elements.