Sulfur exists in two allotropic forms. Allotropes are forms of an element with different physical and chemical properties. The two forms of sulfur are known as Î±-form and Î²-form (the Greek letters alpha and beta, respectively).
National Organizations American Psychological Association (APA) The American Psychological Association (APA) is located in Washington, D.C., and is the largest scientific and professional organization representing psychology in the United States. APA was founded at the turn of the 20th century, and is the world's largest association of psychologists. APA - Division 16 - Division of School Psychology
The median annual wage for psychologists was $72,580 in May 2015. The median wage is the wage at which half the workers in an occupation earned more than that amount and half earned less. The lowest 10 percent earned less than $41,110, and the highest 10 percent earned more than $118,310. Median annual wages for psychologists in May 2015 were as follows: