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They have only been made in laboratories for fractions of seconds

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14y ago

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What is the abbreation of He on the periodic table?

He is the chemical symbol for Helium. In the periodic table we use the chemical symbols to identify elements easily because some elements have rather long names.


What are some general elements and symbols in chemistry?

You should look at a periodic table such as this one: http://www.rsc.org/periodic-table/


What words are made from the table of the elements?

There are many words that can be made with the chemical symbols from the periodic table of elements. Some examples include SOUP, LiNK, SeAl, NO, and TaNK.


What are some commonly used compounds on the periodic table?

There are NO compounds in the Periodic Table. They are all Elements.


How many elements are you periodic table?

118 elements are in the periodic table of elements; some of them are still unnamed (January 2013).


What are some common questions about the periodic table?

Some common questions about the periodic table include: What is the periodic table? How is it organized? What do the numbers and letters on the table represent? Why are some elements grouped together? How many elements are there in total?


Why do some elements start with a different letter on the periodic table?

some of the symbols for elements in the periodic table differ from their names as their syymbols are base on their latin names, for instance, sodium, symbol Na comes from natrium the latin name, same for other elements such as lead (plumbum) and tin (selenium) and so on


What are some important questions to ask about the periodic table?

Some important questions to ask about the periodic table include: What is the organization of elements based on? How are elements grouped together? What are the properties of elements in the same group or period? How does the periodic table help predict the behavior of elements?


Could you show me some chemical symbols for some common elements?

H = hydrogen O = oxygen C = carbon N = nitrogen If you look at a periodic table of the elements, they're all on there.


What period on the periodic table of elements contains radioactive elements and what are they called?

it was found in 1896. you can not find them on the periodic table. you may find some, but often some are.


Why do some elements get excluded from the periodic table?

No element is excluded from the table.


What meaning of the letters in the periodic table?

The letters on the periodic table represent the name of the elements. They are called the element's "symbols." They are usually related to the English names, but some, like lead, are related to their Latin names.