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Chemistry Periodic Table

Find chemical element facts at: http://www.chemicool.com

Chemicool.com offers chemistry forum, tools and more.

The Periodic Table, divised in 1869 by Dmitry I. Mendeleyev is a way of presenting all the elements so as to show their similarities and differences. The elements are arranged in increasing order of atomic number(Z) as you go from left to right accross the table. The horizontal rows a called periods and the vertical rows, groups.

A noble gas is found at the right hand side of each period. There is a progression from metals to non-metals across each period. Elements found in groups (e.g. alkali, halogens) have a similar electronic configuration. The number of electrons in outer shell is the same as the number of the group (e.g. lithium 2


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Uhh?! I don't even remember posting this...!!! :shok:

 


VicRolfe.com

 

Itaas Mo! (Cheers!)

Kahit Kailan, Kaibigan!! (Friends Forever!!)

smb - Walang Katulad!!! (San Miguel Beer - There is nothing like it!!!)

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Just checking to see that the link in my signature is working OK...

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Well that seems to be OK then! :)

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