Symbol: KAtomic Number: 19Atomic Weight: 39.0983Classification: Alkali metalPhase in ~ Room Temperature: SolidDensity: 0.86 grams per centimeter cubedMelting Point: 63.38°C, 146.08°FBoiling Point: 759°C, 1398°FDiscovered by: sir Humphry Davy in 1807Potassium is the fourth aspect in the very first column that the routine table. It is classified as an alkali metal. Potassium atoms have 19 electrons and 19 protons through one valence electron in the outer shell. Potassium is thought about chemically similar to sodium, the alkali metal over it ~ above the routine table.Characteristics and also PropertiesUnder standard conditions potassium is a soft silvery-white metal. It is so soft the it can be easily reduced with a knife. As soon as cut, the exposed metal tarnishes quickly and also forms a dull oxide coating.Potassium has actually a an extremely low melting suggest such that even a candle can cause it come melt. Once it burns, the produces a pale violet colored flame. Potassium likewise has a an extremely low density and also is the 2nd least dense metal after lithium. That is so light the it can float in water.Chemically, potassium is a an extremely active metal. It reaction violently as soon as coming into contact with water, developing heat and hydrogen gas. It additionally reacts with numerous other elements and also substances such as oxygen, acids, sulfur, fluorine, and also nitrogen.

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Where is potassium discovered on Earth?
Because potassium reaction so conveniently with water, it is not found in that elemental type in nature. Instead it is discovered in assorted minerals such as sylvite, carnallite, langbeinite, and also kainite. Many minerals that contain potassium are described as potash.Making up about 2.1% the the load of the Earth"s crust, potassium is the eighth most abundant aspect in the crust. The can also be discovered in s water where it is also around the eighth most abundant element.How is potassium offered today?The largest use of potassium is potassium chloride (KCl) i beg your pardon is supplied to do fertilizers. This is due to the fact that potassium is vital for plant growth.Industrial applications for potassium encompass soaps, detergents, yellow mining, dyes, glass production, gunpowder, and also batteries.Potassium additionally plays a crucial role in our bodies. That is provided in muscle contraction, fluid and pH balance, bone health, and also helps to stop kidney stones. The is around the eighth most abundant aspect in the human being body by weight.How to be it discovered?Potassium was an initial isolated by English chemist sir Humphry Davy in 1807. He used power to different the element from the salt potash.Where did potassium obtain its name?Potassium gets its name from the salt potash from which potassium was an initial isolated. The K symbol for the facet comes native the Latin native "kalium", which method potash.IsotopesThere room three isotopes of potassium that happen naturally: K-39, 40, and 41. The bulk (93%) the potassium found in nature is K-39.
Interesting Facts around Potassium
Potassium chloride (KCl) is sometimes used as a substitute because that table salt. The USDA recommends that adult consume 4.7 grams of potassium each day.A tiny amount the potassium have the right to taste sweet. A higher concentration deserve to taste bitterness or salty.Potassium bicarbonate is the chemical name for baking soda. The is offered in fire extinguishers, baking powders, and antacids.Some an excellent sources of potassium in our diet include bananas, avocados, nuts, chocolate, parsley, and potatoes.More top top the Elements and the periodic TableElementsPeriodic Table
Alkali MetalsLithiumSodiumPotassiumAlkaline planet MetalsBerylliumMagnesiumCalciumRadiumTransition MetalsScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZincSilverPlatinumGoldMercuryPost-transition MetalsAluminumGalliumTinLeadMetalloidsBoronSiliconGermaniumArsenicNonmetalsHydrogenCarbonNitrogenOxygenPhosphorusSulfurHalogensFluorineChlorineIodineNoble GasesHeliumNeonArgonLanthanides and also ActinidesUraniumPlutonium
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