Chemical element same atomic number, or number of protons. Nuclear scientists, however, define a pure element as one that consists of only one stable isotope. For example, a copper wire is 99.99% chemically pure if 99.99% of its atoms are copper, with 29 protons each. However it is not isotopically pure since ordinary copper consists of two stable isotopes, 69% Cu and 31% Cu, with different numbers of neutrons. However, a pure gold ingot would be both chemically and isotopically pure, since ordinary gold consists only of one isotope, Au. Atoms of chemically pure elements may bond to each other chemically in
CU Independent are about 20 section editors who assign stories to reporters and work with the visual staff to produce photographs, videos, and graphics. A managing editor and an editor-in-chief oversee the website. The "CU Independent" received four regional awards from the Society of Professional Journalists in 2014, including "Best Digital-Only Student Publication." The "CU Independent" was founded in 1978 as the "Working Press" but soon adopted the name "Campus Press." It was launched by Mal Deans, a CU journalism instructor, to serve as a student-run newspaper after the Colorado Daily left campus and became a community newspaper. The "Campus Press" published