The alkali metals are the elements in group 1 of the periodic table excluding hydrogen, that is: lithium, sodium, potassium, rubidium, caesium, and francium.
Mercury, also known as "Quick Silver," is the 80th element on the Periodic Table. It is a transition metal, and is the only metal that is in liquid form at room temperature. Although it has many practical purposes, it is very toxic and must be used with extreme caution.
Please submit sites that only deal with the elemental and chemical properties of mercury. This category is NOT a place for solely environmental and health hazards associated with mercury. To submit a site about mercuric hazards, please visit Science: Environment: Environmental Health: Toxic Substances: Mercury . If the site contains both chemical and hazard information, it is allowable.
Metalloids are elements in the periodic table that have properties intermediate between those of metals and nonmetals. They are usually semiconductors.
Welcome to the home of NonmetalS! Nonmetal elements possess high ionization energies and have high electronegativities. They tend to gain electrons when in combination with metals, or to share electrons when in combination with other elements. They tend to be brittle in the solid phase, to have low thermal and electrical conductivities, and to lack metallic luster. Here you can find information about the chemical and physical properties of nonmetals!
Plutonium is one of the most dangerous yet useful elements in existence. It is the 94th element on the Periodic Table, and was discovered in 1941 and is now used in nuclear plants and even in nuclear explosives. Use this category to find information about plutonium as well about its hazards.
Please submit sites to this category relating to plutonium and its properties/hazards. Please avoid sites that contain information about other elements besides plutonium.
Welcome to Uranium, one of the most desired elements by third-world nations! Uranium is #92 on the Periodic Tables, and is used in producing energy as well as nuclear bombs.
Please submit sites to this category that deal with the chemical/physical properties of Uranium and that deal with the hazards involved with Uranium. Please avoid sites that discuss issues that deal primarily with nuclear bombs, reactors, and the like. Thanks! :)