Gold is a valuable metal that has an atomic number of 79. Dating back nearly 5,500 years, different civilizations used gold in jewelry and artwork. These early civilizations also used gold as money.Know More
In nature, many compounds, such as tellurium, calcite and quartz, contain gold. Gold also can occur freely in nature. It is a malleable, shiny and soft metal that has the chemical symbol Au. Malleable means that it is easy to hammer or beat gold into thin sheets or thin wire.
Some other physical properties of gold are that it is a conductor of electricity and heat, and it has a melting point of 1064.18 degrees Celsius. It also has good reflectivity properties.
Presently, gold has many uses, including for jewelry, electrical contacts, printed circuits, shielding on space vehicles and dental alloys.Learn More
Gold is the 79th element on the periodic table and has a relative atomic mass of 196.967. Gold, which has a chemical symbol of Au, is a shiny, valuable metal that was first discovered more than 5,500 years ago.Full Answer >
Gold is expensive because there are limited quantities available. In addition, it is expensive to produce, which also drives up the overall cost.Full Answer >
Chlorine is a nonmetal in the halogen group. Under standard conditions, chlorine is a yellow-green gas at room temperature, as it has a boiling point of -29.27 degrees Fahrenheit. Like all halogens, chlorine is highly reactive, and large amounts can be dangerous or even lethal to human beings.Full Answer >
Phosphorus is a nonmetal. Nonmetals make poor conductors for electricity and heat and have high ionization energies and electronegativities. These elements are listed in the upper right side of the periodic table and include hydrogen, nitrogen, sulfur and selenium.Full Answer >