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Neatly sorted elements to celebrate 150 years

"Neatly sorted elements to celebrate 150 years" "the Periodic table – unloved by generations of school children who struggled to learn the elements, but lov

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Neatly sorted elements to celebrate 150 years
"Neatly sorted elements to celebrate 150 years"

"the Periodic table – unloved by generations of school children who struggled to learn the elements, but loved by the world of science."

"this year will be the 150 years."

"– It is difficult to imagine modern science without the periodic system, it would be like to ride the subway without a map. It would take a line but not knowing where it ends up, " says Lars Öhrström is professor of inorganic chemistry at Chalmers."

"we have to thank for the periodic system is the Russian Dmitry Mendeleyev. In 1869 he published a table of earth's elements. He showed that if you set them up after the weight was every seventh common characteristics. The system organizes the elements in a way that makes it easy to predict how they react with each other."

"the Table was far from complete, among other things, was missing noble gases, but Mendeleyev had put in holes for the elements were not yet discovered. It took a few years before the system was noticed, but gradually as new substances were discovered and fitted into the holes, the system received recognition."

"Lars Öhrström is also the president of the inorganic division of the International kemiunionen (IUAPC), which, among other things, ensures that the approved elements will be properly named. When the periodic system became famous included 63 elements, today, there are 118 approved elements."

"– It is speculated in an outer limit, but no one really knows where it is. But for the first time since the periodic system came to there are no successful experiments to get new elements."

"– But already in the summer is taken a new research facility in use in Dubna outside Moscow, so the situation may not last as long."

"To bring new elements may sound strange for the uninitiated because many people think that the elements is something that already exists, but this is not the case."

"– When the periodic table was built up, they discovered the elements of nature. So, you can not find the elements of the day, but you can find them by creating them, " says Ulrika Forsberg, a nuclear physicist at the university of Lund."

"She is one of those who are working to develop new elements, so-called heavy elements. The practical use of them is so far limited. So far they go only in research studies."

"– we are Now creating, perhaps, an atom in the week or the month, and it falls apart almost immediately, often after less than a second, but you may be able to find a long-lasting group which may have practical implications."

"As an example she mentions the manufactured radioactive substances americium used in smoke detectors and californium that can be used to find oil."

"On the wall at the home of Ulrika Forsberg hangs, as well as on the job, an extended version of the system, which is both a tool and a decoration."

"– If you want to have a thing on their wall that pays tribute to the science I absolutely think that you should choose the periodic system. It symbolizes an incredible amount of knowledge, it took hundreds of years before everything was in place. The periodic system is the basis for the chemistry and at the same time that we build forward on."

"There are also a lot of curiosities around the system. For example, it has many English lines, that a number of chemical elements named after Ytterby mine, as ytterbium. Or holmium which are named after Stockholm. Or that it is called tungsten in Sweden, called tungsten in English, after the heavy stone in Swedish."

"Otherwise it has to have uses in our daily life. Yet the results of the knowledge, which is the aggregate of the periodic table, in the highest degree present. Knowledge of how different substances react with each other has been of great significance for the development of, among other medications, materials and food products."

"And we carry with us a large part of the periodic system," says Lars Öhrström."

"– Around a third of all the naturally occurring elements found in the human body, or in any other living."

"the Periodic table is the table of elements set after in the 1860s discovered how their chemical and physical properties vary with the weights."

"Dmitry Mendeleyev presented his first version of periodic table in 1869."

"There are 118 elements in the periodic system. Of them are 94 natural elements and the other manufactured elements with heavy nuclei."

"Sweden is well represented in the periodic system. Many of the elements discovered by swedes, for example, in the mine in Ytterby on Resarö near Stockholm, sweden, where it was found to yttrium, ytterbium, terbium, erbium, holmium, tantalum, and scandium. The first four have been named after Ytterby."

"the Swedes or Swedish descendants, have discovered the most elements in the world, depending on how you count. But do not the elements that was discovered by svenskättlingen Glen Seaborg (Sjöberg), Sweden is in the top."

"Source: Nationalencyklopedin"

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