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Technetium is an artificial chemical element.
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All synthetic elements are?
radioactive
The lanthanides and actinides are known as the?
Inner transition metals (inner transition elements)F-block
What family is Americium in?
Americium is and actinide.
What describes elements that are made in particle accelerators and are not found in nature?
The elements formed in particle accelerators are usually called Synthetic Elements or Artifically Produced Elements. They are all Transuranium Elements (higher on the periodic table than Uranium), and twenty have been produced so far. Most of them disintegrate within a fraction of a second, some of them in such a short time that it is difficult to verify whether an element has been created or not.
Element is synthetic?
There are a number of synthetic elements. And a few that are what is called quasi-synthetic. The synthetic ones aren't found in nature. And it could be said that the quasi-synthetic ones are found in nature in only the barest trace amounts. The nice folks at Wikipedia have posted a comprehensive list, and a link is provided. That way you can scan the list quickly, and you will have the added advantage of being able to link to any element that looks interesting. Yes, that's right. All the elements on the list are actually hyperlinks to the Wikipedia article on that element. How cool is that?!
What is the name of the series which contains most of the synthetic and radioactive elements?
All of the actinides are radioactive, and almost all are synthetic.
Are actinides and lanthanide elements transition metals?
no they are not. actinide is not part of the transition metals.
Synthetic elements comprise a majority of which of the following groups?
Artifficial radioactive elements are situated in: - period 7 - actinoids (actinides) family
Which elements have no useful purposes at all?
All elements have a useful purpose, including the synthetic actinides that have half-lives measured in milliseconds.
What are Lanthanides and Actinides?
Elements. The Lanthanides are: Atomic No.575859606162636465666768697071NameLaCePrNdPmSmEuGdTbDyHoErTmYbLu The Actinides are:Atomic No.8990919293949596979899100101102103NameAcThPaUNpPuAmCmBkCfEsFmMdNoLr
Synthetic elements are found in what group?
The Actinoids group contain all the synthetic elements. All the elements that have an atomic weight of 95 and above do not occur naturally. They are part of the actinoid elemental group.
What elements are placed at the bottom of the periodic table?
The periodic table of elements is a chart that organizes the elements and emphasizes their shared traits and commonalities. All the known elements and their atomic number are on the periodic table.
Where are landthanides and actinides actinides placed in the periodic table?
Lanthanides and Actinides are placed separately as the properties of these elements is quite different from the elements in periodic table.
What are the seven horizontal rows of the table called how are the elements of row related?
Actinides and 14 elements in actinides
Where on the periodic table do the most man-made elements appear?
They are in the period 7 and in the actinides family.
What the characteristics of actinides?
actinides are the group of elements in the periodic table,see..........
What are the characteristics of actinides?
actinides are the group of elements in the periodic table,see..........
