Group 11 element can also lead to the accumulation of these metals in body tissue; the results are the irreversible but apparently harmless pigmentation conditions known as chrysiasis and argyria respectively. Due to being short lived and radioactive, roentgenium has no biological use but it is likely extremely harmful due to its radioactivity. Group 11 element Group 11, by modern IUPAC numbering, is a group of chemical elements in the periodic table, consisting of copper (Cu), silver (Ag), and gold (Au). Roentgenium (Rg) is also placed in this group in the periodic table, although no chemical experiments have yet been carried out to
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