enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Period (periodic table) - Wikipedia

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

   In the periodic table of the elements, each numbered row is a period. 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.

3. Periodic table - Wikipedia

   en.wikipedia.org/wiki/Periodic_table

   The periodic table, also known as the periodic table of the elements, is an ordered arrangement of the chemical elements into rows ("periods") and columns ("groups"). It is an icon of chemistry and is widely used in physics and other sciences.

4. Period - Wikipedia

   en.wikipedia.org/wiki/Period

   Period (periodic table), a horizontal row of the periodic table "Period-" or "per-iod-", in some chemical compounds, "per" refers to oxidation state, and "iod" refers to the compound containing iodine; Unit of time or timeframe Period (geology), a subdivision of geologic time; Period (physics), the duration of time of one cycle in a repeating event

5. Periodic trends - Wikipedia

   en.wikipedia.org/wiki/Periodic_trends

   The periodic trends in properties of elements. In chemistry, periodic trends are specific patterns present in the periodic table that illustrate different aspects of certain elements when grouped by period and/or group. They were discovered by the Russian chemist Dmitri Mendeleev in 1863.

6. 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.

7. 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.

8. ‘The Crossing’ by Huffington Post

   testkitchen.huffingtonpost.com/thecrossing

   Watch firsthand, in 360 video, as Susan Sarandon listens and learns about refugees' hopes, dreams and journeys

9. Block (periodic table) - Wikipedia

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

   The f-block elements come in two series: lanthanum through ytterbium in period 6, and actinium through nobelium in period 7. All are metals. The f-orbital electrons are less active in the chemistry of the period 6 f-block elements, although they do make some contribution; [5] these are rather similar to each other. They are more active in the ...