Period 6 element the last stable element; all subsequent elements are radioactive. For bismuth, however, its only primordial isotope, Bi, has a half-life of more than 10 years, over a billion times longer than the current age of the universe. As a rule, period 6 elements fill their 6s shells first, then their 4f, 5d, and 6p shells, in that order; however, there are exceptions, such as gold. This period contains the lanthanides, also known as the "rare earths". Many lanthanides are known for their magnetic properties, such as neodymium. Many period 6 transition metals are very valuable, such as gold, however many
The King of Oil Union, and later Russia. The King of Oil The King of Oil: The Secret Lives of Marc Rich is a non-fiction book by Swiss investigative journalist Daniel Ammann. The book was initially released on October 13, 2009 by St. Martin's Press. The book focuses on the biography of Marc Rich, a prominent international financier and commodity trader, who became a billionaire in the 1970s, arguably inventing the spot market for oil, grain, and metals. His Switzerland-based corporation Marc Rich + Co. AG actively traded with the apartheid regime of South Africa, Iran under Ayatollah Khomeini, Cuba, Nigeria under dictator Sani