Has Vanna White ever tripped? Who is the lady on Wheel of Fortune who seems to be pretending to be Vanna? Does Vanna White ever wear the same dress more than once on the Wheel of Fortune? How much money could a game make if it made it to network TV on prime time, say 8pm ET after Jeopardy! and Wheel of Fortune?
Among minerals of economic importance, carbon minerals hold the unique position of being at the same time of the most common and the most rare occurrence.
Carbon (from Latin: carbo coal) is a chemical element with symbol C and atomic number 6. It is nonmetallic and tetravalentâmaking four electrons available to form covalent chemical bonds. Three isotopes occur naturally, 12C and 13C being stable, while 14C is a radioactive isotope, decaying with a half-life of about 5,730 years. Carbon is one of the few elements known since antiquity.