The chalcogens are the chemical elements in group 16 of the periodic table. This group is also known as the oxygen family. It consists of the elements oxygen, sulfur, selenium, tellurium, and the radioactive element polonium. The chemically uncharacterized synthetic element livermorium is predicted to be a chalcogen as well. Often, oxygen is treated separately from the other chalcogens, sometimes even excluded from the scope of the term chalcogen altogether, due to its very different chemical
Stocks open higher as Dow tries to end 2-day slide. Stocks opened higher on Thursday as The Dow Jones Industrial Average fought to end a two-day slide after data showed the number of Americans applying for jobless benefits fell to a 17-year low. The S&P 500 index climbed 5 points, or 0.2%, to 2,343. The Dow Jones Industrial Average advanced 18 points, or 0.1%, to 20,423, as a post-earnings drop in shares of Verizon Communications Inc. and International Business Machines Corp. caused the benchmark to lag its peers.
RELATED INDICES. The S&P 500 Top 50 consists of 50 of the largest companies from the S&P 500, reflecting U.S. mega-cap performance. Index constituents are weighted by ... The S&P 100 Index, a sub-set of the S&P 500Â®, measures the performance of large cap companies in the United States. The index, a member of the Dow Jones Total Stock Market Indices family, is designed to measure the performance of large-cap U.S. equity securities.