On February 2, 2004 a report that moscovium and nihonium were made was written in a journal named Physical Review C. The report was written by a team of Russian scientists at Dubna University's Joint Institute for Nuclear Research and American scientists at the Lawrence Livermore National Laboratory.
These people reported that they bombarded americium with calcium to make four atoms of moscovium.
Scientists of Japan also report that they have made moscovium.
In May 2006 at the Joint Institute for Nuclear Research this element was made by another method and what the final products from radioactive decay were was found by chemical analysis.
The name was changed to Moscovium. It used to be named ununpentium.
Not enough moscovium has been made to measure its physical or chemical properties. It is thought that it would be a hard metal. It may be slightly colored.
Moscovium is in the same group as bismuth but its chemical properties will be different. The chemistry of ununpentium will be very influenced by special relativity. It will make its properties different to the other elements in the periodic table that have a smaller atomic number. One important difference from bismuth is the presence of a stable oxidation state of +I (Mc). The (Mc) ion is thought to have chemical properties like Tl.
Moscovium is inside or near the island of stability. This is probably why it is found in popular culture. It is more likely to be talked about in UFO conspiracy theories.
The most popular story about moscovium is from Bob Lazar. It is not pseudoscience because it is a refutable theory, however Lazar's claims are not backed by any direct experimental evidence at this time.
Tennessine
Tennessine (formerly Ununseptium) is a radioactive superheavy man-made chemical element. It has a symbol Ts and atomic number of 117. It is the second heaviest element of all, and is the second to last element. It is in group 17 in the periodic table, where the halogens are. Its properties are not yet fully known but it is probably a metalloid. The discovery of tennessine was announced in 2010 by scientists in Russia and the United States. They collaborated and it is the most recently discovered element as of 2019. It is named after the state of Tennessee and it has no uses except research.
In 2004, the Joint Institute for Nuclear Research (JINR) team in Dubna, Moscow Oblast, Russia planned an experiment to synthesize (create) element 117. It is called "element 117" because the number of protons in its atom is 117. To do this, they needed to fuse the elements berkelium (element 97) and calcium (element 20). However, the American team at Oak Ridge National Laboratory, the only producer of berkelium in the world, had stopped making berkelium for a while. So, they synthesized the element 118 first using californium (element 98) and calcium.
The Russian team wanted to use berkelium because the isotope of calcium used in the experiment, calcium-48, has 20 protons and 28 neutrons. This is the lightest stable or almost stable nucleus (the middle part of an atom) with much more neutron than proton. Zinc-68 is the second-lightest nucleus of this kind, but it is heavier than calcium-48. Since tennessine has 117 protons, they need another atom with 97 protons to be combined with the calcium atom, and berkelium has 97 protons.
In the experiment, the berkelium is made into a target and the calcium is fired in the form of a beam to the berkelium target. The calcium beam is created in Russia by removing the small amount of calcium-48 from natural calcium using chemical means. The nuclei that is made after the experiment will be heavier and is nearer to the island of stability. This is the idea that some very heavy atoms can be quite stable.
In 2008, the American team started again to create berkelium, and they told the Russian team about it. The program made 22 milligrams of berkelium, and this is enough for the experiment. Soon after, the berkelium was cooled in 90 days and was made more pure by chemical means in 90 more days. The berkelium target had to be taken to Russia quickly because the half-life of the isotope of berkelium used, berkelium-249, is only 330 days. In other words, after 330 days, half of all the berkelium will no longer be berkelium. Actually, if the experiment did not start six months after the target was made, it would have been cancelled because they did not have enough berkelium for the experiment. In summer 2009, the target was packed into five lead containers and was sent by a commercial flight from New York to Moscow.
Both teams had to face the bureaucratic obstacle between America and Russia before they send the berkelium target to allow it to arrive in Russia on time. However, there were still problems: Russian customs did not let the berkelium target get into the country twice due to missing or incomplete paperwork. Even though the target went over the Atlantic Ocean five times, the whole journey only took a few days. When the target finally got into Moscow, it was sent to Dimitrovgrad, Ulyanovsk Oblask. Here, the target was placed on a thin titanium film (layer). This film was then sent to Dubna where it was placed inside the JINR particle accelerator. This particle accelerator is the most powerful particle accelerator in the world for the creation of superheavy elements.
The experiment began in June 2009. In January 2010, the scientists at the Flerov Laboratory of Nuclear Reactions announced within the laboratory that they had found the decay of a new element with atomic number 117 through two decay chains. The odd-odd isotope does 6 alpha decays before doing a spontaneous (sudden) fission. The odd-even isotope does 3 alpha decays before fission. On 9 April 2010, an official report was released in the "Physical Review Letters" journal. It showed that the isotopes that were mentioned in the decay chains were Ts and Ts. The isotopes were made as follows:
The World Factbook
The World Factbook, also known as the CIA World Factbook, is a book that contains the Central Intelligence Agency's information about the world's countries. A new book is published every year. The "Factbook" provides a two- to three-page summary of the demographics, geography, communications, government, economy, and military of 272 countries, dependencies, and other areas in the world.
"The World Factbook" is designed to be used by people that work for the United States government, but it is also used by students, on websites, and in other publications that are not made by governments. Because the U.S. Government made it, it is in the public domain.
Taco
Tacos are Mexican sandwich-like dishes. It is made from a corn tortilla wrapped around some sort of filling. Traditionally, the tortilla is soft, but some variations from different countries have hard shells, as well as flour tortillas.
Tacos are filled with a variety of filling such as beef, chicken, fish, pork, cheese, lettuce, onions, guacamole, and salsa. Sauces can also be added to tacos ranging from salsa to hot sauces like Tapatío. People use many different combinations of foods to build the taco, so it is very versatile.
Tacos are world popular, but especially so in Mexico, China and the United States. In the United States, tacos have been industrialized by fast food businesses such as Taco Bell, Del Taco, and Chipotle.
Gerard Way