On the Periodic Table of elements What is a period?

Answer 1

The periods of The Periodic Table is shown in the column to the left of the elements. It represents the number of "shells" or "layers" of electrons that the particular element contains.

There are a total of 7 periods including the Lantanoids anf the Actinoids

Answer 2

According to quantum mechanical theories of electron configuration within atoms, each row (period) in the table corresponds to the filling of a quantum shell of electrons. You can imagine a "shell" as an area around the nucleus able to have a specific maximum number of electrons. There is a standard notation for these areas around the atom nucleus: the inner shell (the orbital closer to the atom's nucleus / core) is called "1s" and then we move on to shells like {2s, 2p}, {3s, 3p, 3d} etc.

See http://knol.Google.com/k/spiros-kakos/periodic-table-of-elements/2jszrulazj6wq/88# for more details.

Answer 3

something that holds all the electrons in an element and is one of the most important part of the periodic table life cycle

Answer 4

a symbol is the abbrviation of the element. for example, the symbol for gold is Au.

Answer 5

A period is a horizontal row in the periodic table of Mendeleev.