Scientists use the periodic table to quickly refer to information about an element, like atomic mass and chemical symbol. The periodic table’s arrangement also allows scientists to discern trends in ...

You may use table navigation commands for the screen reader of your choice. The Periodic Table of Elements. Each entry contains the atomic number, chemical symbol, and atomic mass to two decimal ...

There are currently 118 known elements on the periodic table, and we've put 20 of them ... a very small part of the ...

The zigzag, staircase, line in the diagram of the periodic table above separates the metals ... system is used for representing elements. The symbol for the element is the first letter of its ...

Mrs Roberts: So, the chemical symbol is Al. See if you can see it in the periodic table. Cal: OK. It is. It's on the right hand side. It's right there. Magic. OK, well I might have been able to ...