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It forms amalgams with mercury and alloys with gold, iron, caesium, sodium, and potassium, but not lithium (despite rubidium and lithium being in the same periodic group). [13] Rubidium and potassium show a very similar purple color in the flame test , and distinguishing the two elements requires more sophisticated analysis, such as spectroscopy.
[90] [91] In fact, it is the 37th most abundant element in the Earth's crust with an abundance of 12 parts per million. [92] In nature, thorium occurs in the +4 oxidation state, together with uranium(IV), zirconium (IV), hafnium(IV), and cerium(IV), and also with scandium , yttrium , and the trivalent lanthanides which have similar ionic radii ...
To retrieve a single item for an element: {{Infobox element/symbol-to-pronunciation|symbol=Mg|item=ipa1}} → / m æ ɡ ˈ n iː z i ə m / |item=: ipa1, respell1, ipa2, respell2, note (defaults to ipa1) Same suffix-numbers make a pair: ipa1 equals respell1. {{Infobox element/pronunciation}} retrieves all four items to format the result.
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 ...
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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.
Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107–1122, 2003. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers from 1–109 taken from this source. IUPAC Standard Atomic Weights Revised Archived 2008-03-05 at the Wayback Machine (2005). WebElements Periodic Table. Retrieved June 30, 2005.
Once an element has been named, a one- or two-letter symbol must be ascribed to it so it can be easily referred to in such contexts as the periodic table. The first letter is always capitalized. While the symbol is often a contraction of the element's name, it may sometimes not match the element's English name; for example, "Pb" for lead (from ...