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2. Periodic table - Wikipedia

   en.wikipedia.org/wiki/Periodic_table

   Periodic table of the chemical elements showing the most or more commonly named sets of elements (in periodic tables), and a traditional dividing line between metals and nonmetals. The f-block actually fits between groups 2 and 3; it is usually shown at the foot of the table to save horizontal space.

3. File:The Periodic Table of the Elements in Pictures.pdf

   en.wikipedia.org/wiki/File:The_Periodic_Table_of...

   English: This pictorial periodic table is colorful, boring, and packed with information. In addition to the element's name, symbol, and atomic number, each element box has a drawing of one of the element's main human uses or natural occurrences. The table is color-coded to show the chemical groupings.

4. Periodic Videos - Wikipedia

   en.wikipedia.org/wiki/Periodic_Videos

   Periodic table. The Periodic Table of Videos has filmed at least one video for each of the 118 elements (from hydrogen to oganesson). [13] They have also filmed several videos that discuss molecules such as D 2 O (heavy water) [14] and sulfuric acid. [15] Also filmed are "Chem definitions" that provide an explanation to words that are used in ...

5. List of chemical elements - Wikipedia

   en.wikipedia.org/wiki/List_of_chemical_elements

   Like the periodic table, the list below organizes the elements by the number of protons in their atoms; it can also be organized by other properties, such as atomic weight, density, and electronegativity. For more detailed information about the origins of element names, see List of chemical element name etymologies.

6. Group (periodic table) - Wikipedia

   en.wikipedia.org/wiki/Group_(periodic_table)

   In the periodic table of the elements, each column is a group. In chemistry, a group (also known as a family) [1] is a column of elements in the periodic table of the chemical elements. There are 18 numbered groups in the periodic table; the 14 f-block columns, between groups 2 and 3, are not numbered.

7. AOL

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   The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

8. Lisa Kudrow explains how ‘Friends’ cast worked on their real ...

   www.aol.com/lisa-kudrow-found-hard-actual...

   The cast of “Friends” is well known for being besties, but that developed over time. During an appearance on Dax Shepard’s “Armchair Expert” podcast, “Friends” star Lisa Kudrow ...

9. Period (periodic table) - Wikipedia

   en.wikipedia.org/wiki/Period_(periodic_table)

   A period on the periodic table is a row of chemical elements. All elements in a row have the same number of electron shells. Each next element in a period has one more proton and is less metallic than its predecessor. Arranged this way, elements in the same group (column) have similar chemical and physical properties, reflecting the periodic law.