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Potassium is a chemical element; it has symbol K (from Neo-Latin kalium) and atomic number 19. It is a silvery white metal that is soft enough to easily cut with a knife. [9] Potassium metal reacts rapidly with atmospheric oxygen to form flaky white potassium peroxide in only seconds of exposure.
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 ...
Element Origin of name [1] [2] Group Period Block Standard atomic weight A r °(E) [a] Density [b] [c] Melting point [d] Boiling point [e] Specific heat capacity [f] Electronegativity [g] Abundance in Earth's crust [h] Origin [i] Phase at r.t. [j] Atomic number Z Symbol Name ( g / cm 3 ) (K) ( J / g · K ) ( mg / kg ) 1 H ...
The chemical element Potassium given symbol K (Latin kalium) An educational software package owned by Skillsoft This page was last edited on 27 ...
Chemical symbols are the abbreviations used in chemistry, mainly for chemical elements; but also for functional groups, chemical compounds, and other entities. Element symbols for chemical elements, also known as atomic symbols , normally consist of one or two letters from the Latin alphabet and are written with the first letter capitalised.
· Symbol K is for the Latin name kalium, from Arabic القلي (al qalīy), which means "calcined ashes". Calcium (Ca) 20 χάλιξ / calx: Greek/Latin "pebble"/"limestone" [20] From Latin calx, which means "lime". Calcium was known as early as the first century when the Ancient Romans prepared lime as calcium oxide. Scandium (Sc) 21 Scandia ...
K is the unit symbol for the kelvin, used to measure thermodynamic temperature (the degree sign is not used with this symbol). K is the chemical symbol for element potassium (from its Latin name kalium). Triangle K. In chess notation, the letter K represents the King (WK for White King, BK for Black King).
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.