Playing Sports, Staying Healthy. Organized athletics are woven into the fabric of the American tradition. Millions of boys and girls participate in baseball, basketball, track and field, and other sports as part of club and/or school teams. In addition to its established health benefits, sports participation has been lauded for fostering such basic values as fair play, competitiveness and achievement.
The periodic table contains seven rows of elements. The lanthanide series belongs to row six as elements 57-71.
As you are probably well aware, in the periodic table, elements are arranged in order of increasing atomic number. The 18 vertical columns of the table are called groups or families, while the seven horizontal rows are called periods and correspond to the seven principal quantum energy levels, n = 1 through n = 7.