Learn how the periodic table developed its current form when Dmitri Mendeleev organized the elements by families with similar properties as well as by relative weight.earn how the periodic table developed its current form when Dmitri Mendeleev organized the elements by families with similar properties as well as by relative weight.
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Her Washington, D.C.-based Radio One has 53 radio stations in 16 urban markets, with projected 2012 revenues of $433 million. As CEO, Liggins has expanded Radio One into TV and online ventures. Hughes' rise from teen mom to media mogul didn't come easily. Working her way up at the Howard University radio station in the 1970s, she had the opportunity in 1979 to buy a radio station with her husband.