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 ...

There are 118 elements in the periodic table, each with a unique symbol and atomic number. Symbol: A one or two-letter abbreviation used to represent the element. Atomic number: The number of ...

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

VOICEOVER: Chemical symbols and formulas. Every element in the periodic table is represented by a unique ... an element because it's got an uppercase F followed by a lowercase e.

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 ...