Coal Tar. Tar derived from both coal and wood (e.g., juniper, pine) are both used for medicinal purposes. However, coal tar is the type used most commonly to treat psoriasis. Tar can help slow the rapid growth of skin cells and restore the skin's appearance. In addition, it can help reduce the inflammation, itching and scaling of psoriasis. Tar products can vary dramatically from brand to brand.
Quick Answer. The lightest element on the periodic table is hydrogen. The atomic weight of hydrogen is 1.00794 and the atomic number is 1. Hydrogen is the most abundant element on the periodic table with 75 percent of the mass of the universe consisting of hydrogen. Continue Reading.
Beryllium is a chemical element that has an atomic symbol of Be and atomic number of 4. Given its group on the periodic table, it is classified as an alkaline earth metal. This type of metal refers to elements that have the similar properties of being shiny and slightly reactive.acts About Beryllium. Fact #1: It is considered to be one of the lightest elements, in terms of weight. Fact #2: During the discovery of beryllium in the 1700s, it was first learned that the beryl mineral (when combined with emerald) produced a sweet-smelling substance.