Search results
Results from the WOW.Com Content Network
Here [Ne] refers to the core electrons which are the same as for the element neon (Ne), the last noble gas before phosphorus in the periodic table. The valence electrons (here 3s 2 3p 3) are written explicitly for all atoms. Electron configurations of elements beyond hassium (element 108) have never been measured; predictions are used below.
Tellurium belongs to the chalcogen (group 16) family of elements on the periodic table, which also includes oxygen, sulfur, selenium and polonium: Tellurium and selenium compounds are similar. Tellurium exhibits the oxidation states −2, +2, +4 and +6, with +4 being most common.
Atomic number (Z): 52: Group: group 16 (chalcogens) Period: period 5: Block p-block Electron configuration [] 4d 10 5s 2 5pElectrons per shell: 2, 8, 18, 18, 6: Physical properties; Phase at STP
Configurations of elements 109 and above are not available. Predictions from reliable sources have been used for these elements. Grayed out electron numbers indicate subshells filled to their maximum. Bracketed noble gas symbols on the left represent inner configurations that are the same in each period. Written out, these are: He, 2, helium : 1s 2
Starting from the third element, lithium, the first shell is full, so its third electron occupies a 2s orbital, giving a 1s 2 2s 1 configuration. The 2s electron is lithium's only valence electron, as the 1s subshell is now too tightly bound to the nucleus to participate in chemical bonding to other atoms: such a shell is called a " core shell ".
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.
Date/Time Thumbnail Dimensions User Comment; current: 11:59, 18 April 2006: 800 × 860 (5 KB): File Upload Bot (Pumbaa80) * '''Description:''' Electron shell diagram for Tellurium, the 52nd element in the periodic table of elements.
Electron configuration 4d 10 5s 2 5p 1: ... It is a member of group 13 on the periodic table and its properties are mostly intermediate ... selenium, and tellurium ...