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2. Electron configurations of the elements (data page) - Wikipedia

   en.wikipedia.org/wiki/Electron_configurations_of...

   However there are numerous exceptions; for example the lightest exception is chromium, which would be predicted to have the configuration 1s 2 2s 2 2p 6 3s 2 3p 6 3d 4 4s 2, written as [Ar] 3d 4 4s 2, but whose actual configuration given in the table below is [Ar] 3d 5 4s 1.

3. Term symbol - Wikipedia

   en.wikipedia.org/wiki/Term_symbol

   For example, 1s 2 2s 2 2p 2 3 P 0 represents the ground state of a neutral carbon atom. The superscript 3 indicates that the spin multiplicity 2 S + 1 is 3 (it is a triplet state ), so S = 1; the letter "P" is spectroscopic notation for L = 1; and the subscript 0 is the value of J (in this case J = L − S ).

4. Electron configuration - Wikipedia

   en.wikipedia.org/wiki/Electron_configuration

   Lithium has two electrons in the 1s-subshell and one in the (higher-energy) 2s-subshell, so its configuration is written 1s 2 2s 1 (pronounced "one-s-two, two-s-one"). Phosphorus (atomic number 15) is as follows: 1s 2 2s 2 2p 6 3s 2 3p 3. For atoms with many electrons, this notation can become lengthy and so an abbreviated notation is used.

5. Periodic table (electron configurations) - Wikipedia

   en.wikipedia.org/wiki/Periodic_table_(electron...

   Og, 118, oganesson : 1s 2 2s 2 2p 6 3s 2 3p 6 4s 2 3d 10 4p 6 5s 2 4d 10 5p 6 6s 2 4f 14 5d 10 6p 6 7s 2 5f 14 6d 10 7p 6 Note that these electron configurations are given for neutral atoms in the gas phase, which are not the same as the electron configurations for the same atoms in chemical environments.

6. Eggs now qualify as ‘healthy’ food, FDA says: Here’s why

   www.aol.com/eggs-now-qualify-healthy-food...

   The U.S. Food and Drug Administration (FDA) now classifies eggs as a “healthy, nutrient-dense" food, according to a new proposed rule. Registered dietitians react to the change.

7. Police dog injured as armed officers target van

   www.aol.com/police-dog-injured-armed-officers...

   A police dog has been injured in an incident that saw armed officers track a van suspected of carrying weapons. West Midlands Police said the van was spotted by officers on Saturday morning using ...