Nickel belongs to the transition Bob Dylan sang “…the times they are a changing” to urge social reform. These words could just as well lead the call for the reform of industrial practices. . TETRAETHYLTIN is a colorless liquid. When a bar of tin is bent, a crackling sound known as the "tin cry" can be heard from Nickel is a chemical element with symbol Ni and atomic number 28. tetraalkyl lead wikiTin is a soft, malleable, ductile and highly crystalline silvery-white metal. It is a silvery-white lustrous metal with a slight golden tinge. Used as biocides, bactericides, fungicides and insecticides; preservatives for wood, textile, paper, and leather. tetraalkyl lead wiki