Chemical element whole number. For example, the relative atomic mass of chlorine is 35.453 u, which differs greatly from a whole number as it is an average of about 76% chlorine-35 and 24% chlorine-37. Whenever a relative atomic mass value differs by more than 1% from a whole number, it is due to this averaging effect, as significant amounts of more than one isotope are naturally present in a sample of that element. Chemists and nuclear scientists have different definitions of a "pure element". In chemistry, a pure element means a substance whose atoms all (or in practice almost all) have the
Shade, the Changing Man (Vertigo) Shade, the Changing Man (Vertigo) Shade, the Changing Man is an American superhero comic book featuring the character of the same name. The series was written by Peter Milligan and published by DC Comics; it lasted for 70 issues, from July 1990 to April 1996. The final 37 issues were published under the company's Vertigo imprint for mature readers. "Shade, the Changing Man" chronicles the adventures of Rac Shade, an alien from the planet Meta who becomes stuck in the body of Troy Grenzer, a convicted serial killer. The series' long-term story arc focuses on the relationship between Shade and