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Download as PDF; Printable version; ... Iron 26 Fe 55.845: Cobalt 27 Co ... This periodic table is the prime form presented at this English wikipedia.
This is a list of chemical elements and their atomic properties, ordered by atomic number (Z).. Since valence electrons are not clearly defined for the d-block and f-block elements, there not being a clear point at which further ionisation becomes unprofitable, a purely formal definition as number of electrons in the outermost shell has been used.
Print/export Download as PDF; Printable version; In other projects Appearance. move to sidebar hide ... 44 Fe 45 Fe 46 Fe 47 Fe 48 Fe 49 Fe 50 ...
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.
Each chemical element has a unique atomic number (Z— for "Zahl", German for "number") representing the number of protons in its nucleus. [4] Each distinct atomic number therefore corresponds to a class of atom: these classes are called the chemical elements. [5] The chemical elements are what the periodic table classifies and organizes.
A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...
The nuclide 54 Fe theoretically can undergo double electron capture to 54 Cr, but the process has never been observed and only a lower limit on the half-life of 4.4×10 20 years has been established. [22] 60 Fe is an extinct radionuclide of long half-life (2.6 million years). [23]
Iron 26 Fe 55.845: Cobalt 27 Co 58.933: Nickel 28 Ni 58.693: Copper 29 Cu 63.546: Zinc 30 Zn 65.38: Gallium 31 Ga 69.723: Germanium 32 Ge 72.630: Arsenic 33 As 74.922: Selenium 34 Se 78.971: Bromine 35 Br 79.904: Krypton 36 Kr 83.798: 5: Rubidium 37 Rb 85.468: Strontium 38 Sr 87.62: Yttrium 39 Y 88.906: Zirconium 40 Zr 91.224: Nio ...