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 element in the an initial column of the routine table. It is classified as an alkali metal. Potassium atoms have actually 19 electrons and also 19 protons v one valence electron in the external shell. Potassium is considered chemically similar to sodium, the alkali metal above it on the routine table.Characteristics and PropertiesUnder standard conditions potassium is a soft silvery-white metal. It is for this reason soft the it have the right to be easily reduced with a knife. Once cut, the exposed steel tarnishes quickly and forms a dull oxide coating.Potassium has actually a really low melting allude such that also a candle can reason it come melt. Once it burns, the produces a pale purple colored flame. Potassium additionally has a an extremely low density and is the 2nd least thick metal after ~ lithium. That is therefore light the it have the right to float in water.Chemically, potassium is a an extremely active metal. It reaction violently once coming into contact with water, developing heat and also hydrogen gas. It also reacts with many other elements and substances such as oxygen, acids, sulfur, fluorine, and also nitrogen.

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Where is potassium found on Earth?
Because potassium reaction so conveniently with water, it is not discovered in that is elemental type in nature. Instead it is discovered in various minerals such as sylvite, carnallite, langbeinite, and also kainite. Many minerals that contain potassium are referred to as potash.Making up around 2.1% of the weight of the Earth"s crust, potassium is the eighth most abundant aspect in the crust. That can additionally be found in ocean water wherein it is also around the eighth many abundant element.How is potassium provided today?The biggest use of potassium is potassium chloride (KCl) which is supplied to make fertilizers. This is since potassium is necessary for tree growth.Industrial applications for potassium incorporate soaps, detergents, yellow mining, dyes, glass production, gunpowder, and also batteries.Potassium likewise plays a an important role in our bodies. It is supplied in muscle contraction, fluid and also pH balance, bone health, and helps to prevent kidney stones. The is about the eighth most abundant facet in the human body by weight.How was it discovered?Potassium was very first isolated by English chemist sir Humphry Davy in 1807. That used electrical energy to separate the element from the salt potash.Where did potassium acquire its name?Potassium gets its name from the salt potash native which potassium was first isolated. The K symbol for the aspect comes native the Latin indigenous "kalium", which means potash.IsotopesThere are three isotope of potassium that take place naturally: K-39, 40, and also 41. The majority (93%) of potassium uncovered in nature is K-39.
Interesting Facts about Potassium
Potassium chloride (KCl) is periodically used as a substitute for table salt. The USDA recommends that adult consume 4.7 grams the potassium every day.A little amount of potassium can taste sweet. A higher concentration have the right to taste bitter or salty.Potassium bicarbonate is the chemical name for baking soda. That is supplied in fire extinguishers, baking powders, and antacids.Some great sources that potassium in our diet encompass bananas, avocados, nuts, chocolate, parsley, and also potatoes.More top top the Elements and the routine TableElementsPeriodic Table
Alkali MetalsLithiumSodiumPotassiumAlkaline earth MetalsBerylliumMagnesiumCalciumRadiumTransition MetalsScandiumTitaniumVanadiumChromiumManganeseIronCobaltNickelCopperZincSilverPlatinumGoldMercuryPost-transition MetalsAluminumGalliumTinLeadMetalloidsBoronSiliconGermaniumArsenicNonmetalsHydrogenCarbonNitrogenOxygenPhosphorusSulfurHalogensFluorineChlorineIodineNoble GasesHeliumNeonArgonLanthanides and also ActinidesUraniumPlutonium
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